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antoniya [11.8K]
2 years ago
10

PLSSS I NEED HELP I’LL MARK BRAINLYESS OR WTV IS CALLED

Mathematics
1 answer:
pickupchik [31]2 years ago
5 0

Answer: y= -7   y= -5   y= -3   y= -1

Step-by-step explanation:

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Jace's car used 14 gallons to travel 378 miles. How far can he travel on 13 gallons?
nata0808 [166]

Answer:

351 miles

Step-by-step explanation:

14 gallons for 378 miles  = 1 gallon for 27 miles

1 * 13 gallons = 27 * 13 miles

13 gallons = 351 miles

6 0
2 years ago
To solve the equation 5sin(2x)=3cosx, you should rewrite it as___.​
galina1969 [7]

Answer:

A

Step-by-step explanation:

We want to solve the equation:

5\sin(2x)=3\cos(x)

To do so, we can rewrite the equation.

Recall the double-angle for sine:

\sin(2x)=2\sin(x)\cos(x)

By substitution:

5\left(2\sin(x)\cos(x)\right)=3\cos(x)

Distribute:

10\sin(x)\cos(x)=3\cos(x)

We can subtract 3cos(x) from both sides:

10\sin(x)\cos(x)-3\cos(x)=0

And factor:

\cos(x)\left(10\sin(x)-3\right)=0

Hence, our answer is A.

*It is important to note that we should not divide both sides by cos(x) to acquire 10sin(x) = 3. This is because we need to find the values of x, and one or more may result in cos(x) = 0, and we cannot divide by 0. Hence, we should subtract and then factor.

5 0
2 years ago
Read 2 more answers
What does this expression mean when it says 2 less than five times a number
Zinaida [17]

Answer:

2 - 5x

Step-by-step explanation:

Answer is in the problem:

2 less than = 2 minus a number ( 2- )

five times a number = 5x ( we don't know what number five is being multiplied by, so we put a variable)

6 0
2 years ago
Use the regression calculator to compare the teams’ number of runs with their number of wins.
Yanka [14]

Answer:

-23.21

Step-by-step explanation:

Edge 2021

5 0
3 years ago
Read 2 more answers
Factorize the following expressions
klio [65]

Step-by-step explanation:

1. a² - ( b ² - 2bc + c² ) = a ² - b ² + 2bc - c²

2. 8p² - 18 q²

3. 3ab² - c²d + 3ab - b²c²

4. x² - 2x + 1

8 0
3 years ago
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