7a = 28 Is a=21 a solution?

yes or no

Answers

Answer 1
No, because 7 x 21 is 147.
Answer 2

Answer:

No

Step-by-step explanation:

No because if a = 21, then 7 * 21 = 147 and 147 is not 28.


Related Questions

Two cars that are 150 miles apart start driving toward each other on parallel roads. The average speed of the first car is 60 miles per hour. The average speed of the second car is 55 miles per hour. Which equation can be used to determine t, the time it takes for the two cars to pass each other?A table showing Rate in mile per hour, Time in hours, and Distance in miles. The first row shows First Car and has 60, t, and 60 t. The second row shows Second Car and has, 55, t, and 55 t.60t – 55t = 060t + 55t = 160t + 55t = 15060t – 55t = 150

Answers

Answer:

your equation should be 60t + 55t =150

Answer:

The answer is C!

Step-by-step explanation:

Please help me solve this

Answers

Answer:

Step-by-step explanation:

This number is much larger than 1. You need to start at the decimal and move left (that's how scientific notation works for numbers larger than 1.)

So the answer is 1.0054 * 10 ^7

The person doing this started at the 1 and moved right until he/she hit the decimal. Wrong direction.

Help please lolololol

Answers

Answer:

7.

5/12

8.

12/39

Step-by-step explanation:

7.

5/6*1/2=5/12

8.

3/4*4/9=12/39

jasmine ran 5 miles in 42 minutes. what rate did jasmine run.
jasmine rate was.

Answers

42/5= 8.4 minutes per mile.
The answer is 8.4 minutes a mile

Can y’all help with 5 and 6 please !
I don’t know why I don’t get it-

Answers

5 = 3.333..
6= 4
Pretty sure

A water park has pools, slides, and rides that, in total, make use of 8.7\times 10^{6}8.7×10 6 gallons of water. They plan to add a ride that would make use of an additional 4.8\times 10^{3}4.8×10 3 gallons of water. Use scientific notation to express the total gallons of water made use of in the park after the new ride is installed.

Answers

Answer:

as i said i would go with 93-51=42

Step-by-step explanation:

8.7*10.6=92.22 and 8.7*10+6=93

4.8*10.3=49.44 and 4.8*10+3=51

so i am thinking that you would add 93+51 which equals 144...

or you could try 93*51 but your gunna get 4,743

or try 93-51 which is 42

or try 93 diveded by 51 which is 1.8235294117647058

I would go with 93-51=42!

hope this helped:)

After the new attraction is constructed, the park will have used 8704.8 × 10³ total gallons of water.

What is Algebra?

Algebra is the study of mathematical symbols, while logic is the manipulation of those signifiers.

Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction is referred to as the PEMDAS principle. To answer the problem properly and accurately, this rule must be followed.

A water park uses 8.7 × 10⁶ gallons of water in total for its pools, slides, and attractions. They intend to include a ride that will use an extra 4.8 × 10³ gallons of water.

After the new attraction is constructed, the park will have used the total gallons of water is given as,

⇒ 8.7 × 10⁶ + 4.8 × 10³

⇒ 8700 × 10³ + 4.8 × 10³

⇒ 8704.8 × 10³

After the new attraction is constructed, the park will have used 8704.8 × 10³ total gallons of water.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ5

solve the following eqation: 4m - 12 = 0

Answers

Answer:

m=3

Step-by-step explanation:

Move the 12 over to the other side so it will be 4m=12, then divide each side by 4 to get m=3

Answer:

m=3

Step-by-step explanation:

4m-12=0

4m-12+12=0+12

4m=12

4m/4 =12\4

m=3

AGAIN LAST BUT NOT LEAST
This is for the smarty pants
and the person knows who I am talking bout

Answers

Answer:

Mr. Smarty Pants here

Distance between some points

A and B = 2

B and C = 5

C and B = 5

Four points that are 7 away from another point

-2,1

5,-6

5,8

12,1

Distance between some points

4

The product of a number and 9,
increased by 4, is 58. Find the
nurnber.

Answers

The answer is 6
58-4 is 54 and 54 divided by 9 is 6
So, the product of 6 and 9 (54) increased by 4 (54+4) is 58

b^(3) * b^(4) write without exponents

Answers

Answer:

(b×b×b)×(b×b×b×b)

Step-by-step explanation:

Writing the equation out is the only way to remove the exponents.

The answer would be (b*b*b) * (b*b*b*b)

Please help me with this homework

Answers

Answer:

Slope is 5 or 5/1

Step-by-step explanation:

( 4 - 9 ) / ( -4 - -3 )

( -5 ) / ( -1 )

5 / 1

Hopefully this helps!

Brainliest please?

Tom makes $264.00 in 5 days. How much does he make in 2 days?

Answers

Answer:

$105.6

Step-by-step explanation:

Tom makes 264 in 5 days.

In one day he makes 52.8.

In two days he makes 105.6.

Answer:

Tom makes $105.60 in 2 days

Step-by-step explanation:

x(5) = $264

Divide both sides by 5: x = 52.8

We get how much he makes in a day.

Multiply by 2: $52.8 * 2

Final answer: $105.6

20% of what number is 75?

Answers

Answer:

15

Step-by-step explanation:

Answer:  375

Step-by-step explanation:

If the expression is expanded, what is the coefficient of x? 4(3x+5)

Answers

Answer:

12

Step-by-step explanation:

4 ( 3x + 5 )

= 4 ( 3x ) + 4 ( 5 )

= 12x + 20

The coefficient of x in 12x is 12.

100 points

.

I know the answer I just need explanation as to why this is the answer!

The question:

3. Two students created a list of steps for the following construction. Which student has steps in the correct order, and which does not? Explain.

The answer:

Student A is Wrong and student B is correct!



The work of the students:

You are given line AB and point C. Construct a line parallel to line AB that passes through point C.



Student A Steps:

Draw a line that intersects points B and C.

Draw a line through point C and point G.

Keep the compass at the same width, and place it on point C.

Keeping the compass at the same width, place it on point F.

Mark the intersection of the two arcs as point G.

Open the compass to the width between points D and E.

Place the compass on point B, and swing an arc that crosses line AB and line BC. Label the points D and E.

Swing an arc that crosses line BC, and label the point F.

Swing an arc that intersects the arc created from line BC at point C.


Student B steps:

Draw a line that intersects points B and C.

Place the compass on point B, and swing an arc that crosses line AB and line BC. Label the points D and E.

Keep the compass at the same width, and place it on point C.

Swing an arc that crosses line BC, and label the point F.

Open the compass to the width between points D and E.

Keeping the compass at the same width, place it on point F.

Swing an arc that intersects the arc created from line BC at point C.

Mark the intersection of the two arcs as point G.

Draw a line through point C and point G.

Answers

Student A is wrong and Student B is correct.

How?

Direction is saying to construct a line that passes through C The last step is enough to describe that A is wrong.Its saying to swing an arc(Should be line).On the other hand Student B has done correct By passing point through C and G it satisfies our required construction.

Use synthetic division to solve the following: 2x^4 + 11x^3 + 13x^2 + 2x – 8 ÷ x +4​

Answers

Answer:

x=-5

Step-by-step explanation:

if you work 35.6 hours and get paid $7.85 a hour how much is that in total

Answers

Answer:

$279.46

Step-by-step explanation:

to solve this equation you have to multiply 35.6 to 7.85

35.6 * 0.05 = 1.78

35.6 * 0.8 = 28.48

35.6 * 7 = 249.2

1.78 + 28.48 + 249.2 = $279.46

if 18 out of 40 snacks are sweet how many sweet snacks will there be per 100 snacks

Answers

Answer:

45 sweet snacks

Step-by-step explanation:

100/40 = 2.5 time more (how many more snacks total)

18 x 2.5 = 45

Answer:

45

Step-by-step explanation:

18 out of 40 is 45%

45% of 100 is 45

Part E
? Question
How would the situation change if the interest on Emma's credit card were compounded annually
rather than monthly, and she didn't make any payments toward the balance?
Select the correct answer from each drop-down menu.
After 4 years, Emma would owe approximately $ M for her original purchase of $300.
It would take around years for her balance to increase from $300 to $450.

Answers

Answer:

$525

2.9 years

Step-by-step explanation:

This question is about financial management. It is to be noted that it would take around 2.9  years for her balance to increase from $300 to $450.

What is the calculation for the above?

Note that according to the question,

After 4 years, Emma would owe about $525 for her original purchase of $300.

The equation will be:

300 * (1 + x)[tex]^{4}[/tex] = 525 (This is based on the compound interest formula_

⇒ (1+x)[tex]^{4}[/tex] = 7/4 (If we divide both sides by 300)

Hence

x = 0.1502

= 15.02%

When the balance ups from $300 to $450,

We can state that:

300 * ( 1+ 15.02%) [tex]^{y}[/tex] = 450

⇒ Hence, y = 2.9 years.

Learn more about financial management at:
https://brainly.com/question/17155837
#SPJ6

Solve x2−4x−12=0 by completing the square. A x=−2 B x=−6 or x=2 C x=−2 or x=6 D x=−6

Answers

Answer:

B x=-6

x=2

Step-by-step explanation:

help me please !!!!!!!!!!

Answers

1) 2m-1=3m

2) 2m=1+m

3) 3= 1+m

4) -2+m=1

5) 2+m=3

6) m-1=2

Hope this helped you- have a good day bro cya)

1. Which is the meaning of the inequality - 6 < x in words?
Negative 6 is less than or equal to a.
Negative 6 is not equal to .
Negative 6 is greater than 3
Negative 6 is less than 2.

Answers

Answer:

first choice

Step-by-step explanation:

[tex]\frac{1}{2}[/tex](-1.4m+0.4)= |?|m+0.2
What number makes the expression equivalent?

Answers

what do you have to do

Name:
Unit 1 Lesson 7 Practice
kylie
Hour:
1. A scale drawing of a school bus has a scale of Vainch to 5 feet. If the length
of the school bus is 4 va inches on the scale drawing, what is the actual
length of the school bus? Explain or show your reasoning.

Answers

Answer:

45 feet

Step-by-step explanation:

4 and 1/2 inches

1/2 =5 feet

put the mixed number into an improper fraction

9/2 *5 = 9*5 = 45 feet

please show work tyvm 4+3x6x(4-3³)²

Answers

Answer:

9526

Step-by-step explanation:

simplify 3^3+27

4+3*6(4-27)^2

simplify: 4-27+ -23

4+3*6(-23)^2

since the power of 2 is even it will be a positive

4+3*6*23^2

simplify: 23^2 to 529

4+3*6*529

simplify 3*6 to 18

4+18*529

then simplify 18*529 to 4+9522

and 4+9522= 9526

What did the acorn say when it grew up?

Answers

Geometry

that was a good one

Judy hiked down the North Rim of the Grand Canyon until she was at an elevation of 1,245 meters below sea level. She stopped to rest, and then hiked down 475 meters more. What elevation is she at if she hiked 544 meters up?

Answers

Answer:

She would be at an elevation of 1314 meters.

Step-by-step explanation:

1245 - 475 + 544

HELPPPP PLEASEEEE!!!!

Answers

Answer:

B

Step-by-step explanation:

C I think sorry if it may be wrong ☹️

Write the equation of a line passing through point (9, 7) and is parallel toy=43x+6. (Place your answer in slope intercept form and do not use spaces in your answer).

Answers

I don't know I don't know

Write a two column proof of the statement. If 9k - 5 = 7k + 3, then k = 4.

Answers

Step-by-step explanation:

9k-5=7k+3

9k-7k=3+5

2k =8

k=4

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