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sdas [7]
2 years ago
10

ASAP PLEASE HELP which answer is right???

Mathematics
1 answer:
Otrada [13]2 years ago
6 0
It’s actually a. Multiply by the square root of 2

You can verify using the Pythagorean Theorem.
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A pharmacist has a 12% solution and a 20% solution of boric acid. How much of each should she use to make 80 grams of a 15% solu
nlexa [21]

Step-by-step explanation:

If x = the amount of 12% and y = the amount of 20%, then x + y = 80

Since we need 80 grams of 15%, 80(.15) = 12.

We are given that .12x + .20y = 12.

We can solve the first equation for x or y. Let's do x.

x = 80 - y

.12(80 - y) + .20y = 12

9.6 - .12y + .20y = 12

.08y = 2.4

y = 30

x = 80 - 30 = 50

5 0
3 years ago
Read 2 more answers
Consider an angle with a measure of θ=225∘.
wel

Answer:

cos 225° = -\frac{\sqrt{2} }{2}

sin 225° = -\frac{\sqrt{2} }{2}

tan 225° = 1

Step-by-step explanation:

I cannot sketch a diagram, but a 225° angle is a 3rd quadrant angle and the reference angle is 45°   (225 - 180 = 45)

cos and sin are negative in the 3rd quadrant and the tan is positive

cos 225° = - cos 45° = -\frac{\sqrt{2} }{2}

sin 225° = -sin 45° = -\frac{\sqrt{2} }{2}

tan 225° = tan 45° = 1

8 0
2 years ago
Which term would be combined with the constant +2 in the expression -8x^2 + 3x + 2?
Naddik [55]

The answer to this question is NONE OF THE ABOVE



you would take each answer and add 2 to the end of it, then factor

8 0
3 years ago
Read 2 more answers
Laura is a gourmet chef who runs a small catering business in a competitive industry. Laura specializes in making wedding cakes.
iren2701 [21]

Answer:

B.less cakes

Step-by-step explanation:

If she keeps making 20 cakes she will lose profit.

If she makes more she will lose profit.

She has to make less cakes to stop losing profits.

So the answer is B. Make less Cakes

7 0
3 years ago
According to one web page on the resale value of cars, a BMW that cost $71,000 in 2003 depreciates in value about 15% a year. Ho
rosijanka [135]
It would be 100% sure its 60.35
4 0
3 years ago
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