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3 years ago

What is 4w + 3 = -7 equaled to

Mathematics

1 answer:

Nata [24]3 years ago

5 0

Answer:

To begin solving we subtract 3 from each side

4w = -10

Next, we divide both side by 4

w = -2.5

~CoCo

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If f(t)= 3t^2-2, find f(k-2)

DedPeter [7]

By plugging (k-2) in t, we can write that
$f(k-2)=3(k-2)^{2}-2=3(k^{2}-4k+4)-2=3 k^{2}-12k+12-2=$ $3 k^{2}-12k+10$

7 0

4 years ago

Harry is trying to solve the equation y = 2x2 − x − 6 using the quadratic formula. He has made an error in one of the steps belo

professor190 [17]

Answer:

Step 2

Step-by-step explanation:

The quadratic formula is given by $x=-b+-\frac{\sqrt{b^{2}-4ac } }{2a}$

Our equation is y = 2x²-x-6

So here our a = 2, b = -1, and c = -6

We can now plug these numbers into our formula

$x= -(-1) +-\frac{\sqrt{(-1)^{2}-4(2)(-6) } }{2(2)} = 1 +-\frac{\sqrt{1+24} }{4} = 1+-\frac{\sqrt{25} }{4}$

Step 2 is incorrect because it states that "x equals the negative of negative 1 plus or minus the square root of negative one plus forty-eight all over two times 2."

The correct statement would be "x equals the negative of negative 1 plus or minus the square root of positive one plus forty-eight all over two times 2.", because the square of a negative is positive, resulting in a positive one.

Since this step is incorrect, the steps after are also incorrect, but Harry went wrong at Step 2

4 0

3 years ago

You open a savings account with a beginning balance of $600. You plan on depositing $50 every month until you have enough money

telo118 [61]

Answer:

48 months

Step-by-step explanation:

first take how much you need and add how much you want to leave, so 2500+500=3000. Then delete 600 from 3000, which will give you $2400. divide $2400 by 50 which gives you 48. it will take 48 months to get enough money to purchase a car at $2500 and leave $500 in the account.

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3 years ago

1. 3u+z=15<br>u+ 2z = 10

IRISSAK [1]

Multiply the second equation by -3 in order to cancel out U

3u+z=15
-3(u+2z)=10

3u+z=15
-3u-6z=-30. Then u subtract those two equations

-5z=-15
Z=3

To solve for u, plug in the z in one of the equation (doesn’t matter which one)

3u+3=15
3u=12
U=4

Ur answer is
U=4. Z=3

4 0

3 years ago

Find the measure of each angle in the problem.

lesya692 [45]

Answer:

Step-by-step explanation:

70+20=90 and thats a right angle which is 90°

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3 years ago