Please help me ill give you brainliest I just got it wrong

30% of a number is 7.5 can be written as an equation.

30% can be rewritten as 0.30, or even 0.3.

a number can be written as "x".

So far, we have 0.3x.

"is" is a keyword for "equal".

0.3x=

It says "is 7.5".

0.3x=7.5

We can solve this equation.

0.3x=7.5

/0.3   /0.3

x=25

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hope it helps

Answer:

E

Step-by-step explanation:

I have never heard of it in my entire life.

Answer and Step-by-step explanation:

A is the correct answer.

The shape called hexahectaenneacontakaiheptagon has 697 sides.

#teamtrees #PAW (Plant And Water)

Answer: It’s C

Step-by-step explanation:

Answer:

80 hours

Step-by-step explanation:

let d represent doug, let l represent laura

first, set up a system of equations representing the problem:

since doug spent 10 less than twice the hours laura did, and we know that the total amount of hours they spent together is 230:

l=2d+10

d+l=230

then solve:

*first i rearranged the equations so i can solve this system of equations using elimination method*

l-2d=10

l+d=230

*subtract*

3d=240

d=80

so, doug spent 80 hours in the lab

Answer:Just multiply Step-by-step explanation:do 12x10x20=2,400

Answer:

x=8 and y =40

Step-by-step explanation:

this is the answer

Answer:

Choice B

Step-by-step explanation:

Multiply in table B :)

Answer:

y = -1/5x -8/5

Step-by-step explanation:

(-3,-1) and (2,-2)

m=(y2-y1)/(x2-x1)

m = ( -2 + 1)/(2 + 3)

m = (-1)/(5)

m = -1/5

y - y1 = m(x - x1)

y + 1 = -1/5(x + 3)

y + 1 = -1/5x -3/5

y = -1/5x -8/5

Answer:

Step-by-step explanation:

X is mass which I s decrease. If you have 740 grams of element x and you add the function.per the rate day you will have a hundredth percent.

Answer:

f(t)=740(0.9970)^365t

0.30% decrease per day

Answer:

7/8

Step-by-step explanation:

U have to use the highest common factor and the lowest common denominator

Answer:

[tex] \frac{7}{8} = 0.875 [/tex]

Step-by-step explanation:

devide the numerator and denumerator by nine

Answer:

120 units^2

Step-by-step explanation:

(12)(5)(0.5)(2) + (12)(2) + (13)(2) + (5)(2) = 120 units^2

Answer:

its blurry

Step-by-step explanation:

Answer:

Step-by-step explanation:

Last season two running backs on the Steelers football team rushed a combined total of 1550 yards.  One rushed 4 times as many yards as the other.  Let x and y represent the number of yards each individual player rushed. this is the equation that was used

         x + y = 1550

         y  = 4x

Answer:

o . ooo 2 and dr 45009.7 ok byy

Answer:

2 1/4

Step-by-step explanation

how do we even answer this? 2 1/4 on the number line will be like this

<-1----2- - --3--->

2 1/4 will be in the dash thats separated.

We have located 2 1/4 on the number line.

A number line is a line on which numbers are labeled at fixed frequencies and this is used to solve simple mathematics problems.

The number that is given is 2 1/4. We have to locate this on the number line. The given number lies between 2 and 3 on the number line. We can convert the fraction into decimal form. It can be done as follows:

2 1/4 = 9/4

= 2.25

Therefore, we have located 2 1/4 on the number line. The image is attached.

Learn more about the number line here: https://brainly.com/question/24644930

#SPJ2

Answer:

x = 4

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Algebra I

Step-by-step explanation:

Step 1: Define

-(8x + 3) = -23 - 3x

Step 2: Solve for x

Answer:

The area of the triangle is 84.511 square units.

Step-by-step explanation:

First step, we need to calculate lengths of line segments AB, BC and AC by Pythagorean Theorem:

AB:

[tex]AB = \sqrt{(12-0)^{2}+(3-8)^{2}}[/tex]

[tex]AB = 13[/tex]

BC:

[tex]BC = \sqrt{(7-12)^{2}+(-9-3)^{2}}[/tex]

[tex]BC = 13[/tex]

AC:

[tex]AC = \sqrt{(7-0)^{2}+(-9-8)^{2}}[/tex]

[tex]AC \approx 18.385[/tex]

Now, we can determine the area of the triangle ([tex]A[/tex]) by Heron's formula:

[tex]A = \sqrt{s\cdot (s-AB)\cdot (s-BC)\cdot (s-AC)}[/tex] (1)

[tex]s = \frac{AB+BC+AC}{2}[/tex] (2)

Where [tex]s[/tex] is the semiperimeter of the triangle.

If we know that [tex]AB = 13[/tex], [tex]BC = 13[/tex] and [tex]AC \approx 18.385[/tex], then the area of the triangle is:

[tex]s = 22.193[/tex]

[tex]A = 84.511[/tex]

The area of the triangle is 84.511 square units.

Answer:

87.5

Edited: Yea should be 56, misread it LOL.

Appoligise to that silly mistake

Step-by-step explanation:

Answer:

,square root of 15;3;4;square root of 21 ;square root of 24 ;5;6;square root of 40

Step-by-step explanation:

the square roots ain't perfect square so make them decimals to know which one is bigger

Answer:

Step-by-step explanation:

Even I need help with that

Answer:

200 stamps should be Kevin whole collection.

Step-by-step explanation:

What's the question exactly? I don't know, I just wrote something I think you might find useful.

Answer:

20 stamps..

You didn't give the whole question but I am GUESSING that it is what is his total amount of stamps in his entire album..

--

10 x 2 = 20

Answer:

total

percentage

Step-by-step explanation:

total would be all percentage would be part

Answer:

the coordinates of b if it is reflected over the x-axis (-2,5)

Answer:

I might be wrong but since ur in a rush: 173

Step-by-step explanation:

Answer:

287.25 miles in 5.75 hours

Step-by-step explanation:

so he was first driving at 48mph because 168/3.5=48

5 miles per hour faster than that is 53mph

53*2.25=119.25

then we add 119.25 and 168

Answer:

+61

Step-by-step explanation:

Answer:

61

Step-by-step explanation:

Please mark as brainliest!

Answer:

B

Step-by-step explanation:

Answer:

38

Step-by-step explanation:

sub everything

4(5)-3(2)(-3)=38

Answer:

Multiply by 1.16

Step-by-step explanation:

Answer:

Multiply it by 0.16