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2 years ago

I need some help with this question. It says: expand and simplify 5(x + 7) + 3(x - 2)

Mathematics

1 answer:

Tanya [424]2 years ago

5 0

Answer:

8x+29

Step-by-step explanation:

open the brackets the collect like terms together

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Which regular polygon with an apothem of 5 inches, will have a perimeter that is closest to the circumference of a circle with a

gladu [14]

Its octagon
hope i helped

7 0

2 years ago

Jaden is flying a kite with an angle of elevation of 33 degrees. If Jaden lets out 275 feet of string, how high above the ground

pshichka [43]

Answer:

149.8 feet

Step-by-step explanation:

θ = Angle of elevation = 33°

The length of string Jaden lets out = Hypotenuse = 275 feet.

How high above the ground that the kite is flying = Opposite Side.

We are solving this question using the Trigonometric function of Sine

Sin θ = Opposite Side/Hypotenuse

Sin 33 = Opposite/275 feet

Cross Multiply

Sin 33 × 275 feet = Opposite

Opposite side(Height ) = 149.77573463 feet

Approximately to the nearest tenth = 149.8 feet

8 0

2 years ago

Write 2.4 x 10 to the power of -3 in standard form

fomenos

Answer:

Step-by-step explanation:

$2.4 \times10^{-3}=\frac{24}{10} \times \frac{1}{10^3} =\frac{24}{10^4} =\frac{24}{10000} =0.0024$

6 0

3 years ago

A triangular playground has angles with measures in the ratio 8 : 6 : 4. What is the measure of the smallest angle?

Airida [17]

Answer:

20°

Step-by-step explanation:

One way of doing this is to find the constant of proportionality, k:

8k + 6k + 4k = 90° Then 18k = 90°, and k turns out to be 90/18, or 5.

Then the angles are 8(5), 6(5) and 4(5). The smallest of these angles is thus 20°

8 0

2 years ago

Read 2 more answers

What is the integral of -3x^3

Sati [7]

$\int -3x^3\, dx=-3\int x^3 \, dx=-3\cdot\dfrac{x^4}{4}+C=\dfrac{3x^4}{4}+C$

6 0

3 years ago