OMG PLS HELP ME I GOT ONLY 1 MIN TO ANSWER!!!! JUST 3 QUESTIONS, 100 POINTS


1.Chris takes a math test where each correct answer scores 3 points, but each incorrect answer takes away 3 points. If there are 10 questions on the test, and Chris misses all of them, which equation would be used to calculate Chris' test score?


3 × (-10)

-3 x 10

3 x 10


2.Two numbers are multiplied and the product is negative. If one number is negative, what is true of the other number?

It is 0.

It is positive.

It could be positive or negative.


3. Which expression means to add -6, 9 times?


9 × (-6)

-9 × 6

-6 × 9

-6 × (-9)

Answer:

0.4x^3 - xy.

Step-by-step explanation:

2/7x(1.4x^2-3.5y)       Distributing the2/7x over the parentheses:

= 2/7 * 1.4 x^3 - 2/7 *3.5xy

= 0.4x^3 - xy

The expression 2/7x(1.4x² - 3.5y) can be written as the polynomial (4/5)x³ - (10/7)xy.

A polynomial in mathematics is an expression made up of coefficients and indeterminates and involves only the operations of multiplication, addition, subtraction, and non-negative integer exponentiation of variables.

To write 2/7x(1.4x² - 3.5y) as a polynomial, we need to first simplify the expression inside the parentheses by distributing the 2/7x:

2/7x(1.4x² - 3.5y) = (2/7x)(1.4x²) - (2/7x)(3.5y)

Next, we can simplify each term by multiplying the coefficients:

2/7x(1.4x² - 3.5y) = (4/5)x³ - (10/7)xy

Thus, 2/7x(1.4x² - 3.5y) can be written as the polynomial (4/5)x³ - (10/7)xy.

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Answer:

Example: If the spinners is divided into 4 than it will be 1/4 or if it is divided into 8 than it will be 1/8 .

Step-by-step explanation:

Answer:

D.) (x + 8)

Step-by-step explanation:

Which two values multiply to (-24) and add to (5)?

These values are (-3) and (8):

-3 x 8 = -24

-3 + 8 = 5

As such, the factors include these two values. One of the factors (x + 8), is one of the answer choices.

x² + 5x - 24 = (x - 3)(x + 8)

Answer:

2 1/2

Step-by-step explanation:

Turn both fractions into improper fractions, multiply the whole number by the denominator and add the numerator.

4 3/4

4 * 4 + 3 = 19

19/4

2 1/4

2 * 4 + 1 = 9

9/4

Now since she drank 2 1/4 gallons of juice, subtract 9/4 from 19/4.

19/4 - 9/4 = 10/4

Now turn back into a mixed fraction, do this by putting 4 into ten twice and taking the remainder and putting it as numerator:

4 * 2 = 8

10 - 8 = 2

2 1/2

Answer:

it means the b that equals the c that equals the d so do the hokey pokey and put booger on paper and answer is 599958

Step-by-step explanation:

well sorry

:D

Answer:

s= -1

Step-by-step explanation:

I believe 7=-10s-3

(s=-1)

Answer: 29 7/8

Step-by-step explanation:

The height of wall will be 29.875 inch.

The height of the wall can be measured by the sum of total height of bricks and the height of mortar joint between the bricks.

According to question there is 4 mortar joint and 5 rows of bricks.

1 mortar joint is situated between 2 bricks. So, if the no. of bricks is n, then mortar joint between them will be n-1.

So, width of one mortar joint is= 3/4 inch

Width of 4 mortar joints = (3/4)*4=3 inch

width of one brick is= 5.375 inch

Width of 5 bricks = 5.375*5=26.875 inch

Height of the wall

= width of 4 mortar joints + width of 5 bricks

= 3+26.875

=29.875inch or 29 7/8 inch

Therefore, the height of wall will be 29.875 inch.

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Answer:

Simplify the following:

sqrt(-50)

sqrt(-50) = sqrt(-1) sqrt(50) = i sqrt(50):

Answer:  i sqrt(50)

Step-by-step explanation:

Answer:

Less than 1 kg

Step-by-step explanation:

1 gram = 0.001kg

So 60g = 0.06kg

Answer:

shoe size (US) 6

Step-by-step explanation:

Mode = most frequently occurring data value

From inspection of the table, we can see that the highest frequency (most number of women) is 20, so therefore the modal class of the data is shoe size (US) 6.

Answer:

Step-by-step explanation:

The statement that describes a step to find the solution to the set of equations is the equation f can be written as 4n + 1 = 6n + 8

The system of equations is given as:

m = 4n + 1

m = 6n + 8

To solve the equation, we simply substitute 4n + 1 for m in the second equation.

So, we have:

4n + 1 = 6n + 8

Hence, the equation f can be written as 4n + 1 = 6n + 8

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No, because to convert meter to millimeter you'll have to multiply the length value by 1000 which will give you 3500.

3.5 × 1000

= 3500.

have a great day!

no because 3.5 times 1000= 3500

hope this helps

Answer:

A

B

E

Step-by-step explanation:

For A, we can simplify it to 2c + 2d by combining like terms. We can then factor out 2 and get 2(c + d).

For B, we combine like terms and 7y - x. We can move the x in front and get -x + 7y.

For E we can factor out 2 and get 2(2j + 3k).

Hope this helps

Answer:

no calculator?

Step-by-step explanation:

33 /548  w/o  a remainder is... 0  b/c   the answer is  0.0602189781....

your question is not a good question.

Answer:

11.37

Step-by-step explanation:

50 - 38.63 is equal to 11.37

Answer:

11.37

Step-by-step explanation:

If that bill is the total, tax and all, then its a simple subtraction problem.

Answer:

i don't know do you play free fire

Answer:

(2, -7)

x = 2

y = -7

Step-by-step explanation:

Let's solve this system of equations by elimination.

Start by multiplying the first equation by 2:

[tex]2(4x)+2(3y)=2(-13)\\8x+6y=-26[/tex]

Next, multiply the second equation by 3:

[tex]3(-5x)+3(2y)=3(-24)\\-15x+6y=-72[/tex]

Notice that both equations now have a "6y", meaning we can subtract both equations and thereby eliminating the variable "y" from the equation:

[tex]8x+6y-(-15x+6y)=-26-(-72)\\8x+6y+15x-6y=-26+72\\23x=46[/tex]

Divide both sides by 23

[tex]x=2[/tex]

Substitute 2 for "x" to solve for "y".

[tex]4x+3y=-13\\4(2)+3y=-13\\8+3y=-13[/tex]

Subtract 8 from both sides:

[tex]3y=-21[/tex]

Divide both sides by 3:

[tex]y=-7[/tex]

Therefore the answer is:

[tex](x, y)=(2, -7)[/tex]

Additional Comments:

Note that we can only divide, subtract, multiply, or add both sides of the equation by the same quantity due to the Division, Subtraction, Multiplication, or Addition Property of Equality. These properties state that if you divide/subtract/multiply/add one side of the equation by one quantity, you must do the same to the other side of the equation so that it remains an equation.

Answer:

A = 81 pi  ft^2

Step-by-step explanation:

We know the circumference of a circle is given by

C = 2 * pi *r

18 pi = 2 * pi *r

Divide each side by 2 pi

18 pi / ( 2pi) = 2 pi r / ( 2pi)

9 = r

We can find the area by

A = pi r^2

A = pi ( 9)^2

A = 81 pi  ft^2

Answer:

You would get 8 cupcakes

Step-by-step explanation:

Since we're splitting C (cupcakes) with P (people) and we know that c = 88 and p = 11 we have to do the equation c / p or 88 / 11 which equals 8.

Answer:24divided by 16/64

Step-by-step explanation:

8x[7+1]2/4x4/16

8x8/2/4x4/16

48/2/4x4/16

48/2/16/64

24/16/64

Answer:

[tex]Cos \ 300 = \dfrac{1}{2}[/tex]

Step-by-step explanation:

  [tex]\sf \boxed{Cos \ (2\pi - \theta) = Cos \ \theta}[/tex]

Cos 300 = Cos ( 360 - 60)

               = Cos 60

               [tex]\sf = \dfrac{1}{2}[/tex]

Answer:

a. x=4 or x=−10

b. x= 3/2 or x= −8

Step-by-step explanation:

(FOR LETTER A)

Step 1: Factor left side of equation.

(x−4)(x+10)=0

Step 2: Set factors equal to 0.

x−4=0 or x+10=0

x=4 or x=−10

(FOR LETTER B)

Step 1: Factor left side of equation.

(2x−3)(x+8)=0

Step 2: Set factors equal to 0.

2x−3=0 or x+8=0

x= 3/2

or x= −8

Answer:

110 : 19

students : teachers

please mark as brainliest thank you

**Kind note:

Since there are two variables in one equation, it is impossible to determine a specific value for x and y. (Unless the trial-and-error method is used).

How to determine the value of x using the equation (16x - 8y = 72)?

To determine the value of "x", we need to isolate the x-variable on one side. The value (or expression) obtained on the opposite side of the x-variable will be the value of x.

How to determine the value of y using the equation (16x - 8y = 72)?

To determine the value of "y", we need to isolate the y-variable on one side. The value (or expression) obtained on the opposite side of the y-variable will be the value of y.

Determining the x-variable:

⇒ 16x - 8y = 72

⇒ 16x = 72 + 8y                            [Adding 8y to both sides of the equation]

⇒ 16x/16 = (72 + 8y)/16                [Dividing 16 to both sides of the equation]

⇒ x = 9/2 + y/2                               [Simplifying both sides of the equation]

⇒ x = (9 + y)/2                                     [Combining the denominators]

Determining the y-variable:

⇒ 16x - 8y = 72

⇒ 16x - 8y - 16x = 72 - 16x         [Subtracting 16x both sides of the equation]

⇒ -8y = 72 - 16x                              [Simplifying both sides of the equation]

⇒ -8y/-8 = (72 - 16x)/-8                [Dividing -8 to both sides of the equation]

⇒ -8y/-8 = 72/-8 - 16x/-8

⇒ -8y/-8 = -72/8 + 16x/8

⇒ y = -9 + 2x                                  [Simplifying both sides of the equation]

First simplify it to suitable form of slope intercept then you can get values

The pairs are

And so on

Answer:

C = 3 + 2.5M

Step-by-step explanation:

2.5

x

M

2.5M

+

3 =

3 + 2.5M

The diameter of the spherical globe that has a surface area of about 1018 in.² is: 18 inches.

Surface area = 4πr², where r is the radius, which is half of the diameter.

The globe is a sphere with a surface area of 1018 in.².

1018 = 4πr²

Solve for r

1018 = 4πr²

1018/4π = r²

81.0 = r²

r = √81.0

r = 9 in.

Diameter = 2(r) = 2(9)

Diameter of the sphere = 18 in.

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Answer:

$3.50 per mile

Step-by-step explanation:

Slope-intercept form of a linear equation:  [tex]y=mx+b[/tex]

(where m is the slope and b is the y-intercept)

Given linear equation: [tex]y=3.5x+4.5[/tex]

(where x is the number of miles traveled and y is the total cost)

The rate of change is the slope of the linear equation.

Therefore, the rate of change is $3.50 per mile.

Compare to slope intercept form of line

Now

Rate of change=slope

Rate of change

Answer:

its $125

thank me later <3

The cost of labor, per hour, will be equal to $125.

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given that Tristan needed to get his computer fixed. He took it to the repair store. The technician at the store worked on the computer for 4.75 hours and charged him $50 for parts.

The cost for labor per hour is,

TC = 50 + 4.75x

643.75 = 50 + 4.75x

x = ( 643.75 - 50) / 4.75

x = $125

Therefore, the cost of labor, per hour, will be equal to $125.

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Answer:

Step-by-step explanation:

Given system

Solve it by substitution

Find the value of x

Find the value of y

Answer:

x = 200

Step-by-step explanation:

Given system of equations:

[tex]\begin{cases}x-y=80\\\\\dfrac{3}{5}=\dfrac{y}{x} \end{cases}[/tex]

Rearrange the second equation to make y the subject by multiplying both sides by x:

[tex]\implies \dfrac{3}{5} \cdot x=\dfrac{y}{x} \cdot x[/tex]

[tex]\implies y=\dfrac{3}{5}x[/tex]

Substitute this into the first equation and solve for x:

[tex]\implies x-\left(\dfrac{3}{5}x\right)=80[/tex]

[tex]\implies \dfrac{2}{5}x=80[/tex]

[tex]\implies \dfrac{2}{5}x \cdot 5=80 \cdot 5[/tex]

[tex]\implies 2x=400[/tex]

[tex]\implies \dfrac{2x}{2}=\dfrac{400}{2}[/tex]

[tex]\implies x=200[/tex]

Therefore, the value of x is 200.

If you want to find the value of y, simply substitute the found value of x into the first equation and solve for y:

[tex]\implies 200-y=80[/tex]

[tex]\implies 200-y+y=80+y[/tex]

[tex]\implies 200=y+80[/tex]

[tex]\implies 200-80=y+80-80[/tex]

[tex]\implies 120=y[/tex]

[tex]\implies y=120[/tex]