All categories

4 years ago

Use the substitution method Y=-2x+11 y=-3x+21

Mathematics

1 answer:

gogolik [260]4 years ago

6 0

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Y = 2 y /3 − 3

x = − y /3 + 7

Hope this helped!

You might be interested in

Bob traveled 90 miles which was 83 1/3 % of his trip. How long was the trip?

lilavasa [31]

Let x be total amount traveled Therefore, x(.8333) = 90 x = 108 108 miles

hope i helped

5 0

3 years ago

Read 2 more answers

What word describes the equal shares of the shape

Alina [70]

Partition does I believe

3 0

4 years ago

Read 2 more answers

Which answer choice shows that the commutative property does not hold for matrix multiplication?

Bess [88]

Given:

The matrix statements in the options.

To find:

The answer choice that show the commutative property does not hold for matrix multiplication.

Solution:

We known that matrix multiplication is not commutative. if A and B are two non-zero matrices, then

$AB\neq BA$

Let us assume,

$A=\begin{bmatrix}-1&-8\\-3&-5\end{bmatrix}\text{ and }B=\begin{bmatrix}1&3\\8&5\end{bmatrix}$

According to the above property of the matrix, we get

$\begin{bmatrix}-1&-8\\-3&-5\end{bmatrix}\begin{bmatrix}1&3\\8&5\end{bmatrix}\neq \begin{bmatrix}1&3\\8&5\end{bmatrix}\begin{bmatrix}-1&-8\\-3&-5\end{bmatrix}$

Therefore, the correct option is B.

3 0

3 years ago

50b + 3f = 27 (b + f = 16) How do you solve b and f?

Juli2301 [7.4K]

Answer:

b= −3 /50 f+ 27/ 50

f= −50 /3 b+9

Step-by-step explanation:

Let's solve for b.

50b+3f=27

Step 1: Add -3f to both sides.

50b+3f+−3f=27+−3f

50b=−3f+27

Step 2: Divide both sides by 50.

50b /50 = −3f+27 /50 b= −3 /50 f+ 27 /50

Let's solve for f.

50b+3f=27

Step 1: Add -50b to both sides.

50b+3f+−50b=27+−50b

3f=−50b+27

Step 2: Divide both sides by 3.

3f /3 = −50b+27 /3

f= −50 /3 b+9

brainliest please?

8 0

3 years ago

If it takes Ohenhen 10km to pass to Emma and it takes Emma 8km to pass to Omusi and considering Ohenhen & Omusi are at perpe

mash [69]

Answer:

12.81 km

Step-by-step explanation:

Pythagoras formula for right-angled triangles.

this scenario just says that Emma is the corner point of that triangle with an angle of 90 degrees.

the distance between Ohenhen and Omusi is the baseline (Hypotenuse c) of that triangle. and the distances to Emma are the sides a and b.

so the formula is

c² = a² + b² = 10² + 8² = 100 + 64 = 164

$c = \sqrt{164}$

c ≈ 12.81 km (rounded to the nearest hundredth).

6 0

3 years ago