Solve the following system of equations:

8x+14y=4
-6x-7y=-10

Answer:

x = -6

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Step-by-step explanation:

Step 1: Define

5x - 6 = 4x - 12

Step 2: Solve for x

Answer:

Step-by-step explanation:

So it’s 201

Step-by-step explanation:

2 + x + 2x = 14

3x + 2 = 14 (combine like terms)

3x = 12 (subtract 2 from both sides)

Hence the answer is 3x = 12. (B)

Answer:

No solution

Step-by-step explanation:

Hope this helps. Pls give brainliest.

Step-by-step explanation:

Q1

A. x must be 0

B. x can be any number. it because every number times by 0 will be 0

Q2

(2⁸ . 5-⁵ . 19⁰)-² . (5-²/2³)⁴ . 2²⁸ =

2-¹⁶ . 5¹⁰ . 1 . 5-⁸ . 2-¹² . 2²⁸ =

2-¹⁶-¹²+²⁸ . 5¹⁰-⁸ =

2⁰ + 5² = 25

Q3

4.55 x 10¹³ - 1.78 x 10¹² =

45.5 x 10¹² - 1.78 x 10¹² =

43.72 x 10¹²

4,37 x 10¹³ kg

Q4

A. 3.9 x 10³³ ergs/s x 2.45 x 10⁵ s = 9.555 x 10³⁸

or in scientific we can write 9.56 x 10³⁸ ergs

B. 7.4 x 10-³ mm. Because the blood cell is a tiny part in.our body. it's impossible to have a cell blood of 7.4 x 10³ mm or 7.4 meters in diameter

[tex]{x}^{18}={y}^{21}={z}^{28}[/tex]

3, [tex]3 log_y x [/tex], [tex]3 log_z y [/tex] and [tex]7 log_x z [/tex] are in??

[tex]{x}^{18}={y}^{21}={z}^{28} [/tex]

[tex]{x}^{18}={y}^{21}[/tex]

By taking LOG on both sides

[tex]log {x}^{18}=log {y}^{21} [/tex]

[tex]18 log x= 21 log y[/tex]

[tex]2 \ times 3 log x= 7 log y[/tex]

[tex] 3 \dfrac{log x}{log y} =\dfrac{7}{2}[/tex]

[tex]\bold{ 3 log_y x =\dfrac{7}{2}}[/tex]

[tex]{x}^{18}={z}^{28} [/tex]

By taking LOG on both sides

[tex]log {x}^{18}=log {z}^{28} [/tex]

[tex]18 log x =28 log z [/tex]

[tex] 9 log x =7 \times 2 log z [/tex]

[tex] 7\dfrac{log z}{log x} = \dfrac{9}{2}[/tex]

[tex]\bold{7 log_x z= \dfrac{9}{2}}[/tex]

[tex]{y}^{21}={z}^{28} [/tex]

By taking LOG on both sides

[tex]log {y}^{21}=log {z}^{28} [/tex]

[tex]21 log y=28 log z [/tex]

[tex] 3 log y = 4 log z [/tex]

[tex]3 \dfrac{ log y}{logz }= 4 [/tex]

[tex]\bold{ 3 log_z y = 4 }[/tex]

3, [tex]3 log_y x [/tex], [tex]3 log_z y [/tex] and [tex]7 log_x z [/tex] are ...in??

[tex]\bold{ 3 log_y x =\dfrac{7}{2}}[/tex]

[tex]\bold{7 log_x z= \dfrac{9}{2}}[/tex]

[tex]\bold{ 3 log_z y = 4 }[/tex]

[tex]3 , \: \dfrac{7}{2 } , \: 4 , \: \dfrac{9}{2}[/tex]

[tex]a_1 = 3 [/tex]

[tex]a_2 = \dfrac{7}{2 } [/tex]

[tex]a_3 = 4 [/tex]

[tex]a_2 = \dfrac{7}{2 } [/tex]

[tex]d \implies a_2 - a_1 = = a_3-a_2 [/tex]

[tex]d \implies 2 a_2 = a_3+a_1 [/tex]

[tex]d \implies 2 \times \dfrac{7}{2}= 7 [/tex]

[tex]d \implies 7 = 7 [/tex]

Answer:

x = -2

Step-by-step explanation:

You want to add 2x on both sides to get to this equation -3x - 2 = 4 with the -2 being negative due to having a positive and a negative sign turning into a negative number.  Add 2 on both sides to get -3x = 6.  Divide -3 on both sides to get your final answer or as your x value which is -2.

Answer:

Step-by-step explanation:

-5x - 2 = -2x + 4

-3x - 2 = 4

-3x = 6

x = -2

Answer:

x= - 3 and y= - 7

Step-by-step explanation:

Answer:

X = -3

Y = -7

Step-by-step explanation:

Hope this helps. Pls give brainliest.

Answer:

The statement which is not true about the sample is;

The sample of 10 plants was a census of the corn plants

Step-by-step explanation:

The statement out of the given statements which is not true about the sample is "The sample of 10 plants was a census of the corn plants"

The 10 unique number corn which the farmer randomly selects of which he then count the number of ears in the corn and multiply by 100 so as to quickly arrive at an estimate of the total number of ears of corn for the crop, without individually counting the ears on each plant from the 100 plants

A census is a counting and individual enumeration procedure to collect and record characteristic information and details of the all the members that make up a given population

Therefore, the farmer is finding an estimate of the number of ears of in the plants rather than taking a census of the ears of corn on each plants in the population of 100 plants

Answer:

The sample of 10 plants was a census of the corn plants.

Step-by-step explanation:

The person above me is correct. I am taking the test review.

Answer:

Alisha can mow the lawn 5 times before refilling the container.

Step-by-step explanation:

We have the total amount of gas to mow the lawn and the amount needed to mow one lawn, so we need to divide.

3 3/4 divided by 3/4 =5

Therefore she can mow the lawn 5 times before refilling the container.

Answer:

He spend $4.27 i guess

Step-by-step explanation:

prove me wrong

Answer:

1. First choice, 1/2

2. First choice, 1/2

Step-by-step explanation:

3 odd numbers on a dice, so 3/6 = 1/2

12 numbers, 1- 12, the even numbers are 2, 4, 6, 8, 1-, and 12. 6 out of 12 = 6/12 = 1/2

Answer:

2x +12

Step-by-step explanation:

-4x + 6x -12

Answer:

-6 is the answer.

Step-by-step explanation:

4x - 5 = x - 23

or, 4x - x = -23 + 5

or, 3x = -18

or, x = -18/3

therefore, x = -6

Answer:

the answer is (3)

Step-by-step explanation:

4x - 5 = x - 23

4x = x - 23 + 5

4x = x - 18

4x - x = -18

3x = -18

[tex] \frac{3x}{3} = \frac{ - 18}{3} [/tex]

[tex]x = - 6[/tex]

Answer:

I think seventeen months

Answer:

15 : 5 = 3 : 1

Step-by-step explanation:

Answer:

answer =3/2 or x = -7/2

Step-by-step explanation:

....

Answer:

true

Step-by-step explanation:

sec^4A-2tan^2Asec^2A+tan^4A=1

(sec^2A-tan^2A)^2=1

1^2=1

which is true

Answer:

Step-by-step explanation:

1) Your number = x

2) Multiply it by 3 = 3x

3) Add 4 = 3x + 4

4) Square the result (quantity square) = (3x + 4)²

I hope this helps! I would really appreciate it if you would please mark me brainliest! Have a blessed day!

Answer:

(a) 40 m

(b) 4 seconds

(c) 1 second, 45 m

(d) 1 second

Step-by-step explanation:

The given height as a function of height is

[tex]h= -5t^2+10t+40[/tex]

where t is the time in seconds and h is the height, in meters.

(a) At the starting time, t=0, the arrow is at the platform.

So, putting t=0, to get the height of the platform

[tex]h= -5(0)^2+10(0)+40 = 40[/tex] m

(b) For determining the length of time the arrow is in the air, first t determining the value of t for which h=0, we have

[tex]-5t^2+10t+40=0 \\\\-t^2+2t+8=0 \\\\-t^2+4t-2t+8=0 \\\\-t(t-4)-2(t-4)=0 \\\\(-t-2)(t-4)=0 \\\\[/tex]

t=-2, t=4  

Mathematically, the value of t for which the arrow is in the air is the time from -2 to 4 seconds.

But the arrow was at the platform at time t=0. So, neglecting the negative time, the time for which the arrow was in the air is the time from 0 to 4 seconds, i.e 4 seconds.

(c) Mathematically, the value of t for which the arrow is in the air is the time from t=-2 to t=4 seconds. So, in the middle of time, i.e at t=1 second the arrow will reach the maximum height.

Putting t=1 to get the maximum height, we have

[tex]h=-5(1)^2+10(1)+40[/tex]

h=-5+10+40

h=45 m

Therefore, the maximum height is 45 m at t=1 second.

(d) Referinf option (c), at the time, t=1 second, the arrow has a height of exactly 45m above the ground

Step-by-step explanation:

first you go by counting by 2s and when your done it says one will ride alone so minus 1 that is 5 so the answer will be 5

Step-by-step explanation:

Circumference =perimeter so

perimeter of a circle is 2 pie r

Answer:

2

Step-by-step explanation:

Given that:

Number of pizzas made = x

Total pizza sauce left = 1/3 L

Amount of sauce used on each pizza made = 1/6 L

Hence , Number of pizza's made ;

(Total pizza sauce left / amount of sauce used per pizza made)

= (1/3 L) ÷ (1/6)L

= 1/3 * 6/ 1

=6 / 3

= 2

Hence, number of pizza's made = 2

Step-by-step explanation:

General line equation: y = mx + c.

2y + 3x = 5

2y = -3x + 5

y = -1.5x + 2.5

Hence m = -1.5 and c = 2.5.

[tex]\tt m=-\dfrac{3}{2}\\\\c=\dfrac{5}{2}[/tex]

Given

The line equation

2y+3x=5

Required

m(gradient) and c(constant)

Solution

The two-variable linear equation is a linear equation that has 2 variables and the exponent is one

ax+by=c

We change the equation in standard form  : y = mx + c

[tex]\tt 2y=-3x+5\\\\y=-\dfrac{3}{2}x+\dfrac{5}{2}[/tex]

Gradient :

[tex]\tt -\dfrac{3}{2}[/tex]

Constant :

[tex]\tt \dfrac{5}{2}[/tex]

Answer:

2

Step-by-step explanation:

Answer: 64

Step-by-step explanation:

Answer:

64

Step-by-step explanation:

Ten percent of 64 is the same as;

0.1 * 640

= 64