Mathematics Middle School

What is the value of the expression 5y2 + 4x when x = 2.5 and y = 3?

Question 5 options:

40


55


231.5


235

Answers

Answer 1

Answer:

it is 55 the 2nd one

5(9)+10=55

Answer 2

Answer:

40

Step-by-step explanation:

5 times 3 is 15

15 times 2 is 30

4 times 2.5 is 10

30 plus 10 equals 40

Related Questions

What was Albert Einstein's favorite board game?
5 points and if right +brainliest

Answers

i believe it is the mosaic pearl game, it was a game that he played that, consisted of 520 coloured beads that can be inserted into a punch-hole frame to create patterns
The mosaic pearl game

Can someone write a real-world word problem for the inequality 3x+10>30
Plz ＞﹏＜

Answers

you an two friends want to save up some money to buy a $30 toy. you already have $10 saved. How much more does each person need to save to have more than enough money to buy the toy?

i’m so sorry if it’s wrong

-3 5/6 + 1 1/10 the answer needs to be a mixed number in the simplest form

Answers

Answer:

−2 11/15

Step-by-step explanation:

plss show the dumb work
30x+45+18=250

Answers

Answer:

6.23

Step-by-step explanation:

30x + 45 + 18 = 250

Combine like terms:

30x + 63 = 250

30x = 187

x = 6.23


30x+45+18=250
30x+63=250
30x=250-63
30x=187
X=187/30

A cell phone costs $120. The price is reduced 30% for a sale. How much is the savings?

Answers

Answer:

the phone is 84 dollalrs

Step-by-step explanation:

Answer:

$36

Step-by-step explanation:

Since 30% = 30/100 then we can transform it into a decimal:

30%=0.30

Now if we multiply 120•0.30, we will get how much we saved.

$36, we saved $36.

Bonus information:

If the problem was to say "How much does the cell phone cost after the discount?", then you would multiply 120•0.70.

Hope this helps! If you have any questions on how I got my answer feel free to ask. Stay safe!

This unit, you have learned several formulas and equations. Match the formula or equation with what the answer represents.
1.______

100% + percent = or


100% - percent =


2._______-

original x percent =


*when the percent is written as a decimal


3._____

original x (1.00 + percent) = or


original x (1.00 - percent) =


*when the percent is written as a decimal


4.________

new - original x 100% =

___________

original




5._________

| measured - actual | x 100% =

______________

actual


6.

measured - actual =


__________________________________________________________________

Column B

a.formula to find error

b.total change in the percent

c.formula to find the percent of change when given two numbers

d.amount something increases or decreases

e.equation to find the total amount

f.formula to find percent of error

Answers

Answer:

.

Step-by-step explanation:

.

USA testprep help! 2questions

Answers

1) B

2) C

Hope this helps!
The answer is nice and good

If you make $28 dollars and hour and work for 32 hours in a week. How much money do you Gross ?
Do i divide the 28 to the 32?

Answers

No you multiply $28 by 32. Which is $896
6272 first multiply 28 and 32 then multiply it by 7

Which expression is not equivalent to 12x + 18y?

Question 2 options:

6(2x) + 18y


6(2x + 3y)


6x + 9y + 6x + 9y


3(4x + 18y)

Answers

Answer:

the last one 3(4x+18y)

Answer :3(4x+18y)
Explanation: 3•4x = 12x , 3•18y = 54y . Which would make it 12x+54y

Which of the following is not a function of the skeletal system?
a. makes red blood cells
b. mineral storage
c. provides protection
d. moves the body

Answers

Answer:

I think D.

Step-by-step explanation:

The bone marrow makes the red blood cells, the skeletal system provides protection, and stores minerals.

Answer:

D hopes it helps

Step-by-step explanation:

Which is a better deal?
Brand A $3.75 for 20oz
Brand B $4.50 for 30oz

Answers

Answer:

B

Step-by-step explanation:

B I know because I’m different

Martin keeps track of the low temperature every day. On Monday, it was -12˚ On Tuesday, it was -9˚C. What is the difference between the low temperature on Tuesday and the low temperature on Monday?

Group of answer choices
21 C

-21 C

-3 C

3 C

Answers

The difference is 3 declares Celsius.

Answer:

the answer is -3 c

Step-by-step explanation:

what you do to get -3 is you subtract  -12 -  -9

Hope this helped and hope its the right answer!

Plz Answer This Mathematics Question??? NEED HELP ASAP

Answers

Ummmmmmmmmmmmmmmmmm1$86:5&

Answer:  

the answer is 86.48×10

​20

​​ x

​3

​​

Step-by-step explanation:

Regroup terms.

9.4\times {10}^{13}xx\times 9.2x\times {10}^{7}9.4×10

​13

​​ xx×9.2x×10

​7

​​

2 Take out the constants.

(9.4\times 9.2)xxx\times {10}^{13}\times {10}^{7}(9.4×9.2)xxx×10

​13

​​ ×10

​7

​​

3 Simplify  9.4\times 9.29.4×9.2  to  86.4886.48.

86.48xxx\times {10}^{13}\times {10}^{7}86.48xxx×10

​13

​​ ×10

​7

​​

4 Simplify.

86.48{x}^{3}\times {10}^{13}\times {10}^{7}86.48x

​3

​​ ×10

​13

​​ ×10

​7

​​

5 Use Product Rule: {x}^{a}{x}^{b}={x}^{a+b}x

​a

​​ x

​b

​​ =x

​a+b

​​ .

86.48{x}^{3}\times {10}^{20}86.48x

​3

​​ ×10

​20

​​

6 Regroup terms.

86.48\times {10}^{20}{x}^{3}86.48×10

​20

​​ x

​3

​​

PLS HELP ME ASAP PLS AND TY

Answers

Answer:

607

Step-by-step explanation:

the answer to the question is -607!

Dana loves rocks! She has 6 pieces of granite, 3 pieces of marble, 14 pieces of sandstone, and 1 piece of slate.
What is the ratio of pieces of sandstone to pieces of marble in Dana's collection?
Choose 1 answer:


(Choice A)
A
14:6

(Choice B)
B
3:24

(Choice C)
C
14:3

(Choice D)
D
24:3

Answers

C,

All you need to do is look at what the category is and check to see what it’s asking you to put first

answer the question correctly.

Answers

Answer:

the answer is 10 to the tenth power or 10000000000

Step-by-step explanation:

Which is an independent clause?

A. Their mother had sent them to Grandmother's home
B. because she could not care for them herself
C. After living in San Francisco for ten years
D. a place she had never seen before

Answers

The independent clause is A
A is the correct answer

help please help please

Answers

Answer: It should be 144 in total

Step-by-step explanation:

I did the math

someone please help me

Answers

Answer:

I believe you ur smart u can do it.

But Try downloading math photo And take a pic

Step-by-step explanation:

MARK ME BRAINLIEST  PLS.

BCD or the 2nd 3rd and 4th are because you would use y=mx+b

Which of the following numbers does not round to the same number as the others? 5one-fifth, 4Start Fraction 5 over 6 End Fraction, 5start fraction 6 over 7 end fraction, 4start fraction 11 over 12 end fraction

Answers

Answer:

It increases

Step-by-step explanation:

(5/x) + 5

As x decreases, 5/x increases.  So the expression increases.

Answer:

It increases

Step-by-step explanation:

sry for my last awser ive been reseachering it and finally got a awser. lol  

Please! I need help ASAP!

Answers

Answer:

need the answer still ?

Step-by-step explanation:

PLS HELP ME ASAP PLS AND TY

Answers

Answer:

-801

Step-by-step explanation:

ndudbbehxbwhxbs

can you give me brainliness

Answer:

I think I am not sure but it looks like they are both negative numbers, so maybe try doing 1,681-880 which is -801

Step-by-step explanation:

you can double check by doing -880+ -801= 1,681.

A team of divers is at an elevation of 250 below the surface of the water, or -250 ft. another team is directly above the first team at an elevation of -120 ft. What is the distance between the teams?

Answers

The answer is exactly 130ft

Answer:

The answer should be -130 feet.

Hope u get it right :)

Solve for y and find the value of y for each value of x

x + 2/y - 3 = 1 x = -1, 0, 1

Answers

Answer:

2x 2y -1

Step-by-step explanation:

x plus 1x equals 2x and 2y equals 2 y and 1 plus 1 minus 3

Answer:

2x yx -2

Step-by-step explanation:

Sorry but I need help once again.. -w-

Answers

Answer:

1:x=10

Step-by-step explanation:

Step 1: Add 5 to both sides.

2/5x-5+5+-1+5

2/5x=4

Step 2: Multiply both sides by 5/2.

(5/2)*(2/5x)=(5/2)*(4)

x=10

A measuring scoop holds 10 cm3 of flour. Brandon's bag of flour contains 90 scoops. How many cakes can Brandon bake with his flour if his recipe calls for 180 grams of flour per cake? 1 cm3 of flour weighs 0.6 grams.

Answers

The number of cakes that Brandon can bake with his flour given the recipe is 8.

How many cakes can he bake?

The first step is to determine the total cm³ of flour that is the bag of flour: 10cm³ x 90 = 900 cm³

Now, convert the answer gotten above to grams:

900 / 0.6 = 1500

The last step is to divide 1500 by 180

1500 / 180 = 8 cakes

To learn more about division, please check: https://brainly.com/question/194007

#SPJ2

Answer:

3 cakes

Step-by-step explanation:

First we'll do 10·90=900

Then we'll take the 900 and multiply-- careful not to divide!-- it by 0.6 to get 540

Finally, 540÷180=3

3 cakes will be baked

Hope this helps!

Graph a line a slope of 2/5 that contains the point (-2,4).

Answers

Go to the point -2, 4 and count up 2 right 5

Plz Answer This Mathematics Question??? NEED HELP ASAP

Answers

Answer is 4,000,000 aka 4mil

{(3, 5), (3, 7), (6, 7), (4, 1), (8, 1)}
Determine the domain and the range of the relation. *Type the domain and range in number form from least to greatest

Answers

Answer:

D: 3,4,6,8 R:1,5,7

Step-by-step explanation:

domain: (3,4,6,8)
range: (1,5,7)

If 4.5 > -4.5, how are the positions of the two numbers related on the horizontal number line?

Answers

Answer:

The two positions on the number line are opposites.

Step-by-step explanation:

They are the same distance from zero on the number line.

Answer:

Step-by-step explanation:

+4.5 is to the right of -4.5.

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