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Ostrovityanka [42]
3 years ago
10

•Please help, due tomorrow• 1-4 True or false

Mathematics
2 answers:
Nonamiya [84]3 years ago
7 0

Answer:

1. false complemenatary

2.true

3.true

4.false 2

Step-by-step explanation:

Zigmanuir [339]3 years ago
4 0

Answer:

1. True

2. True

3.True

4.True

Step-by-step explanation:

I'm not joking btw.

I have no idea why your teacher gave a worksheet with all true

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Let A = -4k+ 3 and B = 3k +17. If A = B, then what is the value of k?​
kupik [55]

Answer:

k=-2

Step-by-step explanation:

Using substitution to find what you're missing, (in this case k) is when you plug each letter into the other equation:

-4k+3=3k+17

So now solve for k:

subtract 3 from both sides...

-4k=3k+14

subtract 3k from both sides to combine with -4k...

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divide -7 from both sides...

k=-2

3 0
2 years ago
An engineering student answered 81 questons correctly ona 90 question test. What percent of the question did she answer correctl
SIZIF [17.4K]

Answer:

correct answer = 90%

Step-by-step explanation:

Let x be the percent of the question did she answer correctly.

Given:

An engineering student answered 81 questions correctly on a 90 question test.

Find the percent of the question did she answer correctly.

Solution:

Percentage formula is given below

% answer =\frac{correct\ answer}{total\ questions}\times 100

% answer =\frac{81}{90}\times 100

% answer =\frac{81\times 100}{90}

% answer =\frac{81\times 10}{9}

% answer =9\times 10

% answer =90

correct answer = 90%

Therefore, she answered 90% correctly.

4 0
3 years ago
A bag contains 6 red and 10 black marbles. If you pick up a marble, record it’s color and return it to the bag 200 times how man
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An account earns simple annual interest.
Svetllana [295]

Answer:

a. Find the interest earned.

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b. Find the balance of the account.

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Yw

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