Evaluate -4x +9 for x=8

Mathematics

2 answers:

larisa [96]3 years ago

7 0

Answer:

-23

Step-by-step explanation:

- 4 ( 8 ) + 9

- 32 + 9

- 23

alexgriva [62]3 years ago

3 0

Answer:

- 23

Step-by-step explanation:

Step 1:

- 4x + 9 Equation

Step 2:

- 4 ( 8 ) + 9 Input x value

Step 3:

- 32 + 9 Multiply

Answer:

- 23 Add

Hope This Helps :)

You might be interested in

Eliana owns the Blossom garden shop. To keep her plants healthy, she always adds 3 cups of fertilizer for every 8 cups of soil.

Nataly [62]

Answer: Eliana should add 9 cups of fertilizer to the pot.

Step-by-step explanation:

Given , Eliana always adds 3 cups of fertilizer for every 8 cups of soil. .

As the quantity of fertilizer is proportional to the quantity of soil.

That means,

$\dfrac{\text{Number of cups of fertilizer for 24 cups of soil}}{\text{24}}=\dfrac{\text{Number of cups of fertilizer for 8 cups of soil}}{8}\\\\\Rightarrow \dfrac{\text{Number of cups of fertilizer for 24 cups of soil}}{24}=\dfrac{3}{8}$

Multiply 24 on both sides , we get

$\Rightarrow\ \text{Number of cups of fertilizer for 24 cups of soil}=\dfrac{3}{8}\times24=3\times3=9$

Hence, Eliana should add 9 cups of fertilizer to the pot.

3 0

4 years ago

What would happen to the buying power of your investment after one year if your rate of return was 3% and the rate of inflation

krek1111 [17]

Purchasing power is the value of a currency expressed in terms of the amount of goods or services that one unit of money can buy. A rate of return is the annual percentage return realized on an investment, which is adjusted for changes in prices due to inflation or other external effects.
Given:
Rate of return = 3%Rate of inflation =3%
Buying Power = 3% - 3% = 0%
Thus, the buying power will remain same for the year.

8 0

3 years ago

In 2007, the value of a house was £119,995 From 2007 to 2018, house prices decreased by 9.4%. How much has the value of the hous

labwork [276]

Answer: £11,279.53

Step-by-step explanation:

Given

In 2007, the price of the house was £119,995

Price decreases by 9.4%

$\Rightarrow \text{Current Price}=\text{Old Price}-9.4\%\text{Old Price}\\\Rightarrow 119,995-9.4\%\ \text{of}\ 119,995\\\Rightarrow 119,995(1-0.094)=119,995\times 0.906\\\Rightarrow 108,715.47$