Mathematics College

Writing and Evaluating an Algebraic Expression Try it five more than the product of two and a number, decreased by seven; evaluate when a = 8​

Answers

Answer 1

Answer:

7

Step-by-step explanation:

dont trust me i dont know the answer sry

Answer 2

Answer:

ya

Step-by-step explanation:

Related Questions

1) 3x – 2y = 2
y = 2x + 8
​alguien que me ayude con esto no lo entendemos gracias

Answers

{ 3x-2y=2
{ y=2x+8

{ -2y=2-3x
{ y=2x+8

{ y= -1+3/2x
{ y= 2x+8

-1+3/2x = 2x+8
x=-18

y= 2(-18)+8
y= -28

(x,y) = ( -18,-28)

——
Solution check

{ 3(-18)-2(-28)=2
{ -28=2(-18)+8

{ 2=2
{ -28=-28

PLEASE HELP

The value of Amy's car depreciated each year after she bought it. The function v(t) = 24, 893(0.88) represents the value of Amy's car t years after she bought it. What is the rate of depreciation?

Answers

Answer:

12%

Step-by-step explanation:

1 - 0.88= 0.12 x 100 = 12

I'm doing an area of the triangle can you help me ​

Answers

Answer:

72cm

Step-by-step explanation:

Area = b times h / 2

so 12 times 12 /2

144 / 2

72

Find the Central arc measure

Answers

Answer:

The central arc measure is 125.

Factor the expression
(x+2)^2-25y^4

Answers

Answer:

(x+2-5y^2) (x+2+5y^2)

Step-by-step explanation:

......,....................

−(x+2+5y2)(5y2−x−2)


This is the right answer.

12. Two trains, Train A and Train B, weigh a total of 312 tons. Train A is heavier than Train B. The difference in their weights is 170 tons. Use elimination to solve the system of equations to find the weight of each train. a + b = 312 a-b= 170 a + b = 312 a - b = 170​

Answers

Answer:

a = 241

b = 71

Step-by-step explanation:

a + b = 312 (#1)

a - b = 170 (#2)

(#1) + (#2) = 2a = 482.

a = 482 / 2 = 241.

b = 312 - 241 = 71.

Subtract. (−2+5i)−(−2+9i) Enter your answer in the box.

Answers

Answer:

-4i

Step-by-step explanation:

Answer:

14i

Step-by-step explanation:

(-2+5i)-(-2+9i)

remove () because they are unneeded

-2+51--2+9i

-2+5i+2+9i

0+14i

14i

Find the unit rate. 108 people 12 days people : days = (Type whole numbers or decimals.)​

Answers

108 people 12 days

the people:days=108:12

BUT this is not simplified of course

We simplify ratios like a fraction.

We can see that both numbers are divisible by 12

So we can do

108÷12/12÷12=9/1 (answer)

To know that both are divisible by 12 isn't hard as long as you are observant and are good with numbers and the divisibility rules of 2 and 3.

I need help! ANSWER THIS QUICK

Answers

Answer:

Step-by-step explanation:

Diameter = 84 km

Radius = 84/2 = 42 km

Area of circle = πr²

                      = 3.14 * 42 * 42

                      = 5538.96 km²

Scientific number 0.000001019

Answers

Answer:

Yup that's a scientific number alright.

Answer:

Step-by-step explanation:

The scientific notation 1019e-9 is same as 1019×10^-9 or 1019×10-9. Thus, to get the answer to 1019e-9 as a decimal, we multiply 1019 by 10 to the power of -9.

0.0095 = _________. is percent

Answers

Answer:

0.95%

Step-by-step explanation:

hope this helped--

Answer:

9.5 %

Step-by-step explanation:

Mark brainiest if this helped u

solve the equation for t. show your work

5(2t - 3) - 7.5t = 0.5(12 - t)

Answers

Answer:

t=7

Step-by-step explanation:

10t-15-7.5t=6-0.5t

2.5t-15=6-0.5t

2.5t+0.5t=6+15

3t=21

t=7

HELP PLEASE FAST 15 and 16 how to solve PLEASE

​

Answers

Answer:

15. 6

16. 40

Step-by-step explanation:

Use the formula for pythagorus: c^2 = a^2 + b^2

15. 10^2 = 8^2 + b^2

100 = 64 + b^2

*minus 64 on both sides

36 = b^2

*square root both sides

b = √36 = 6  

16. c^2 = 24^2 + 32^2

c^2 = 576 + 1024

c^2 = 1600

*square root both sides

c = √1600 = 40

Hope this helps :)

1) 164

2) 1600

because a^2 + b^2 = c^2 <3

(giving brainiest)

tell how you solved the question

Answers

Answer:

Step-by-step explanation:

4000

um help me plz!!!!!!!!

Answers

Answer:

7

Step-by-step explanation:

substitute x for 3

4(3)+2/2

Use PEMDAS

12+2/2

14/2

Divide

7

The answer is 7.
If you replace x with 3, you are left with the equation 4(3)+2 divided by 2. When you multiply you get 12+2=14/2 is 7

Ken drinks 2/7 of a carton of milk each day. How much milk does drink in 3 days?
"Answer at the bottom"





Answer should be
3x2=6
6/7​

Answers

Answer:

This answer is correct.

Step-by-step explanation:

Answer:

6/7

Step-by-step explanation:

2 x 3 = 6

1 x 7 = 7

Use distributive property ⅓(6x-18)

Answers

Answer:

2x - 6

Step-by-step explanation:

It would become:

1/3 * 6x - 1/3 * 18

2x - 6

I really really need help

Answers

Answer:

i have no idea

Step-by-step explanation:

t or f i need help with this

Answers

Answer:

false 5 is an odd

Answer:

Step-by-step explanation:

false

What is 57x67÷78
Me will give brainliest
Thx in advance

Answers

Answer:

48.9615384615

Step-by-step explanation:

hope this helps!!!

57 × 67 ÷ 78

57 × 67 = 3819

3819 ÷ 78 = 48.9615

Give the answer for this logic with solution: "I am a two-digit number. The sum of my digits is 9. My ones digit is twice my tens digit."

Answers

Answer:

36

Step-by-step explanation:

-3x =21
1/3x =6
-1/2x =-7

Answers

-3x = 21
Divide -3 from both sides and you get x = -7

1/3x = 6
Divide 1/3 from both sides and you get x = 18

-1/2x = -7
Divide -1/2 from both sides and you get x = 14 (you get a positive answer from 2 negatives)

Dividing 1/3 is just multiplying by 3, and dividing -1/2 is just multiplying by -2

We have 20 weeks left from school before the summer. How many days is left? Show me how you found the answer.

Answers

Answer:

140 days

Step-by-step explanation:

there are 7 days in 1 week so just multiply 20 by 7 which is 140, to make it easier multiply 2 by 7 which is 14 then add the 0 soo 140.

Hope this helps :)

The answer is 140 days. There are 7 days in one week, and we have 20 weeks left so we need to multiply to find the answer.
7x20=140

A circle has a central angle of 6 radians that intersects an arc of length 14in

Answers

c=2pir

arclength/circumference=centralangle/2piradians

14/2pir=6/2pi
7/pir=3/pi
times pir both sides
7=3r
divide by 3 both sides
7/3=r

well,
um
the answer is B

3 examples of proportion in real life ?

Answers

Answer:

Proportion of games an NFL team wins.

Proportion of defective products in a shipment.

Proportion of voters of a certain candidate in an election.

Step-by-step explanation:

Proportion is a relationship between measures.

Examples in real life are:

Proportion of games an NFL team wins.

For example, this past regular season, the Buffalo Bills won 13 games out of 16, so the proportion of games won by the Bills is 13/16 = 0.8125.

Other possible examples are:

Proportion of defective products in a shipment.

Proportion of voters of a certain candidate in an election.

...

Figure ABCD is a square. Find the
measure of ZABE.
B
С
A А
D
mZABE = [?]°

Answers

Answer:

∠ABE = 45°

Step-by-step explanation:

Since we know that the figure is a square, we know that ∠A,  ∠B,  ∠C, and  ∠D are all 90°.

Assuming that Point E is at the center of the square, the lines will bisect each of the angles above. Half of 90° would be 45°.

∠ABE = 45°.

There are 20 beads in a bag, of which 8 beads are white, 2 beads are yellow, 6 beads are green, and the rest are blue. Janina will choose one bead from the bag without looking. What are the odds in favor of choosing a white bead?

Answers

Answer:

8/20 in simplest form this would be 2/5

Step-by-step explanation:

Answer:

2/5

Step-by-step explanation:

Total of 20 beads

8 are white

8/20 beads = 4/10 = 2/5

Bella the Chihuahua weighs 5 1/2 pounds. What is Bella's weight in Kilograms?

Answers

About 2.495 I think

Can some please help this the last question I’ll mark brainless

Answers

Answer:

6.25h=50

Step-by-step explanation:

help plz I don't know the answer plz really answer it

Answers

Answer:

She needs to run 1/2 mile on Saturday.

Step-by-step explanation:

Hope this helps!!

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