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3 years ago

11

The temperature on a summer afternoon is 85°F. Define a variable and write an expression to find the temperature after it change

s. Then evaluate your expression for a decrease of 11 degrees Fahrenheit

2 answers:

JulijaS [17]3 years ago

8 0

A variable a letter to represent a unknown number.

85-x

85-11=74

Volgvan3 years ago

4 0

Answer:

85 + c; 85 + (–11) = 74; 74°F

Step-by-step explanation:

Math ._.

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John has 1/3 as much money as grant. Grant gives John 9$. Now grant has 6$ more than John. How much money do grant and John have

anastassius [24]

Answer:

48 dollars

Step-by-step explanation:

grant originally had 36 and john had 12

decrease grant by 9 and increase john by 9

grant has 27, and john has 21

difference is 6 so the sum is 48.

5 0

3 years ago

Is it true or false that 7 over 2 a irrational number ?

Svet_ta [14]

No it is not due to 7 over 2 equals 3.5 making it rational.

4 0

3 years ago

The variables y and x have a proportional relationship, and y = 7 when x = 2 What is the value of x when y = 212 Enter your answ

SSSSS [86.1K]

Answer:

proportional relational ship

y= kx

7 = k2

solve for k

7/2 =k

y = 7/2 x

if y = 21

21 =7/2 x

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multiply by 2/7 on each side

21* 2/7 = 2/7*7/2 x

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3 0

3 years ago

Ben had two copies of the same poster in different sizes. Both posters are in the shape of a square. The side length of the two

omeli [17]

Answer:

$\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}$

the question states that a person named Ben has two copies of the same poster having different sizes , provided they both are squares !

further , we've been given that the side length of the posters are in the ratio of 3:7 and the perimeter of the smaller posted is 27 cm .

We've been asked to find the perimeter of the bigger poster !

so let's start ~

$let\: the \: length \: of \: the \: smaller \: poster \: be \: 3x \\ \\ let \: the \: length \: of \: the \: bigger \: poster \: be \: 7x \\ \\ now \: , \: \\ \\ perimeter \: of \: square = 4 \times side \\ \\ \implies \: perimeter \: of \: shorter \: square = 4 \times 3x \\ \\ \implies \: 27 = 3x \\ \\ x = \cancel\frac{27}{3} \\ \\ \implies\red{\boxed{ \: x = 9 \: cm}}$

now ,

$side \: length \: of \: bigger \: square = 7x \\ \\ \implies \: 7 \times 9 = 63 \: cm \\ \\ \therefore \: perimeter \: of \: bigger \: square = 4 \times 63 \\ \\ \bold\pink{\implies \: 252 \: cm}$

hope helpful :D

4 0

2 years ago

Given f(x)= -4x+7, find f(1)

Lisa [10]

Hi there!

To find f(1), plug in x=1 into the equation
f(1) = -4(1) + 7
= -4 + 7
= 3
That's your answer.
Have an awesome day! :)

From your friendly Helper-in-Training, collinjun0827

3 0

3 years ago

Read 2 more answers