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3 years ago

What percentage of temperatures are below 55 degrees

Mathematics

1 answer:

aivan3 [116]3 years ago

6 0

Answer:

D) 20%

Step-by-step explanation:

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Gary’s pay is $15 per hour. He receives a 6% pay raise. Did her pay increase by the same percent amount as Gary’s? Explain.

deff fn [24]

15x6% and then add that to 15
And that’s your answer

7 0

3 years ago

Read 2 more answers

If a mixture of 24 lb. of cement, 48 lb. of sand, and 63 lb. of gravel is needed to make 1 cubic foot of concrete, how many poun

Radda [10]

This is a ratio problem. You only need solve the ratio of the sand.

 48 = n 
1 156

(48)(156) = 1(n) (cross multiplying)

7,488 pounds

To check: The pool deck is 156 times larger than the original amount of concrete so the amount of sand needs to be 156 times more.

4 0

4 years ago

Prove the identity. secx- cos x = sin x tan x

Mandarinka [93]

Answer:

LHS = RHS

Step-by-step explanation:

$\sec(x) - \cos(x) \\ = \frac{1}{ \cos(x) } - \cos(x) \\ = \frac{1 - { \cos(x) }^{2} }{ \cos(x) }$

Since

${ \sin(x) }^{2} + { \cos(x) }^{2} = 1 \\ 1 - { \cos(x) }^{2} = { \sin(x) }^{2}$

Therefore,

$\frac{1 - \ { \cos(x) }^{2} }{ \cos(x) } \\ = \frac{ { \sin(x) }^{2} }{ \cos(x) } \\ = \frac{ \sin(x ) \times \sin(x) }{ \cos(x) } \\ = \sin(x) \tan(x)$

Therefore LHS = RHS

8 0

4 years ago

What is the slope and the point of y - 5 = 3/2 (x + 3)? please help

goldfiish [28.3K]

y - 5 = 3/2(x + 3)

y - 5 = 3/2x + 9/2

y = 3/2x + 9/2 + 5

y = 3/2x + 19/2

Equation of the line formula : y = mx + c

#So the slope (m) is 3/2

<h2>Answer : 3/2</h2>

4 0

3 years ago

Simplify the following expression using properties of exponents. (4z)⁻³×(2z)⁵

Elena-2011 [213]

Answer:

z²/2

Step-by-step explanation:

The applicable properties of exponents are ...

(ab)^c = (a^c)(b^c)

(a^b)(a^c) = a^(b+c)

a^-b = 1/a^b

$(4z)^{-3}\cdot(2z)^5=(4^{-3})(z^{-3})(2^5)(z^5)=\dfrac{32}{64}z^{-3+5}\\\\=\boxed{\dfrac{z^2}{2}}$

8 0

4 years ago