All categories

3 years ago

Does anyone know this?

Mathematics

1 answer:

Marrrta [24]3 years ago

8 0

Answer:

f(-9) = 279

Step-by-step explanation:

f(x) = 4x^2 + 7x + 18

f(-9) = 4(-9)^2 +7(-9) + 18

= 4(81) - 63 + 18

= 324 - 63 + 18

= 279

You might be interested in

A line has a slope of zero and passes through the point (-2, 3). Which of the following points must also lie on the line?

brilliants [131]

Answer:

(5,3)

Step-by-step explanation

Because the slope is 0, it means its a horizontal line. because the horizontal is on 3, then it doesnt matter what x is as long as y is 3 if that makes any sense.

7 0

3 years ago

Ivan's chocolate bar is 64% cocoa. If the weight of the chocolate bar is 68 grams, how many grams of cocoa does it contain? Roun

Gennadij [26K]

Answer:

0.64 x 68 = 43.5 grams

Step-by-step explanation:

6 0

2 years ago

Read 2 more answers

If 2x – 10y = -1 and 5x + 6y = 4 are true equations, what would be the value<br> of 7x - 4y?

Zigmanuir [339]

Answer:

Step-by-step explanation:

If the equations are true, they can be solved simultaneously.

Consider 2x-10y=-1 as Eq1 and 5x+6y=4 as Eq2

Multiplying Eq1 with 3 and Eq2 with 5 we get,

6x-30y=-3 -- Eq3 and 25x+30y=20 -- Eq4

Adding Eq3 and Eq4,

31x=17 Therefore, x=17/31

Plugin x=17/31 in Eq3,

6(17/31)-30y=-3 --- y=13/62

Plug In values of x and y in 7x-4y we get,

7(17/31)-4(13/62) = 3

So the value of 7x-4y = 3.

8 0

2 years ago

What is the estimate of 5.26 ➕ 9.75?

Lelechka [254]

5.26 + 9.75
= 15.01
= 15

7 0

3 years ago

-y^2+x^3-4x^3-6y^2+5-2-x^3

Alex

$\orange{-}$ $\red{-}$ $\green{-}$ $\blue{-}$ $\orange{-}$ $\orange{-}$ $\red{-}$ $\green{-}$ $\blue{-}$ $\orange{-}$

${\texttt{{Hello}}}$

$\gray{\boxed{{\textsf{trouble}}}}$

$-y ^ { 2 } +x ^ { 3 } -4x ^ { 3 } -6y ^ { 2 } +5-2-x ^ { 3 } \\$

$\green{\boxed{{\textsf{Development}}}}$

$-y ^ { 2 } +x ^ { 3 } -4x ^ { 3 } -6y ^ { 2 } +5-2-x ^ { 3 } \\$

$-y^{2}-3x^{3}-6y^{2}+5-2-x^{3} \\$

$-y^{2}-3x^{3}-6y^{2}+3-x^{3} \\$

$-y^{2}-4x^{3}-6y^{2}+3 \\$

$-7y^{2}-4x^{3}+3 \\$

$\red{\boxed{{\textsf{Answer}}}}$

$-7y^{2}-4x^{3}+3 \\$

$\red{\texttt{{\textsf{XxXDxX}}}}$

$\orange{-}$ $\red{-}$ $\green{-}$ $\blue{-}$ $\orange{-}$ $\orange{-}$ $\red{-}$ $\green{-}$ $\blue{-}$ $\orange{-}$

6 0

2 years ago