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3 years ago

[13 + (−19)] × (−7) ÷ (−3)

Mathematics

1 answer:

harina [27]3 years ago

3 0

Answer:

-14

Step-by-step explanation:

c a l c u l a t o r

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PLease help me! Due tonight thank you!

NARA [144]

Answer:

1432.08 centimeters^2 I think

Step-by-step explanation:

Surface Area = 2×(3.4×18 + 3.4×30.6 + 18×30.6) = 1432.08 centimeters2

8 0

3 years ago

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The null and alternate hypotheses are: H0: π1 ≤ π2 H1: π1 > π2 A sample of 100 observations from the first population indicat

nadezda [96]

Answer:

365

Step-by-step explanation:

8 0

4 years ago

What is the length of BD?

I am Lyosha [343]

Answer:

$10\sqrt{3}$

Step-by-step explanation:

<u>Trigonometric Ratios </u>

This problem will be solved by the use of a trigonometric ratio called sine because it relates the opposite side of a given angle with the hypotenuse of the triangle.

Selecting the angle of 60° in triangle ABD:

<em>Sine Ratio </em>

$\displaystyle \sin 60^\circ=\frac{\text{opposite leg}}{\text{hypotenuse}}$

$\displaystyle \sin 60^\circ=\frac{BD}{20}$

Solving for BD:

$\displaystyle BD=20\sin 60^\circ$

Since

$\sin 60^\circ=\frac{\sqrt{3}}{2}$

$\displaystyle BD=20\frac{\sqrt{3}}{2}$

Simplifying:

$\boxed{\displaystyle BD=10\sqrt{3}}$

4 0

3 years ago

What is the electric field strength at a distance of 15 cm from a point charge that has 12

ivann1987 [24]

The formula is E= kQ/ d^2

k is 9x10^9
i changed 15 cm to 0.15 m

=> 9x10^9 x 12 OVER (0.15)^2

the answer is 4.8x10^12 N/C

but this is the electric field.

to find electric field STRENGTH, it’s E= F/q and you did not give a value for the force

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3 years ago

24. A pair of shoes with a regular price of $90 is on sale for 30% off. Miguel has a coupon for an additional 5% off the

DochEvi [55]

The answer is b , 90•.35= 31.5 90-31.50 = 58.50

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4 years ago

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