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Tems11 [23]
3 years ago
11

Solve each of thr following sytem of equations by substitution!! 4x+3y=37 y=x-4

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
8 0
X = 7, y = 3
yeeeeeeee
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2x+3y=11<br> 5x+3y=15<br> What is the answer ?
horsena [70]

Answer:

(X,Y)=( \frac{4}{3} ,\frac{25}{9})

Step-by-step explanation:

5 0
3 years ago
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For the functions f(x)=−7x2−x and g(x)=9x2−4x, find (f−g)(x) and (f−g)(1).
siniylev [52]

Step-by-step explanation:

f(x) = -7x² - x

g(x) = 9x² - 4x

(f - g)(x) = (-7x² - x) - (9x² - 4x)

(f - g)(x) = (-7x² - 9x²) + (-x + 4x)

(f - g)(x) = -16x² + 3x

(f - g)(1) = -16(1)² + 3(1)

(f - g)(1) = -16.1 + 3

(f - g)(1) = -16 + 3

(f - g)(1) = -13

6 0
3 years ago
A square pyramid and a cube have the same surface area don’t of each side of the base of the Square pyramid is 10 feet the width
o-na [289]

Answer:

The lateral height of the square pyramid is 5.8\ ft

Step-by-step explanation:

step 1

Find the surface area of the cube

The surface area of the cube is equal to

SA=6b^{2}

where

b is the length side of the cube

w have

b=6\ ft

substitute

SA=6(6^{2})=216\ ft^{2}

step 2

Find the lateral height of the square pyramid

we know that

the surface area of the square pyramid  is equal to

SA=B+4(\frac{1}{2}bh)

where

B is the area of the base

b is the base of the lateral triangle (base of the square)

h is the lateral height of the square pyramid

B=(10^{2})=100\ ft^{2}

SA=216\ ft^{2} -----> is the same surface that the cube

b=10\ ft

substitute the values and solve for h

216=100+4(\frac{1}{2}*(10)*h)

216-100=20h

h=116/20=5.8\ ft

6 0
3 years ago
Michael is 4 times as old as Brandon and is also 27years older than Brandon.
Licemer1 [7]
So what is your question here?
8 0
3 years ago
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Ely’s team scored 62, 76, 53, and 70 points in their first four basketball games. How many points does the team need to score in
Yanka [14]
89 is the amount of points the team needs to score in the fifth game to average 70 points.

I hope this help
7 0
3 years ago
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