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3 years ago

What is the answer for -3(-5) - 16?

Mathematics

1 answer:

harina [27]3 years ago

4 0

Answer:

-1

Step-by-step explanation:

-3x(-5)-16

15-16

-1

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A jacket's original price is 65.00. it is on sale for 40% off. you have to pay 5% sales tax. what is the final price for the jac

nekit [7.7K]

40% of 65.00=0.40×65=26
65-26=39(your price)

sales tax(5%)=0.05×39=1.95 tax

39+1.95
=40.95(total)

3 0

2 years ago

Suppose ABC is a right triangle with sides a, b, and c and right angle at C. Find the unknown side length using the Pythagorean

Leno4ka [110]

Answer:

a = $\sqrt{7}$

Step-by-step explanation:

I think your question is missed of key information, allow me to add in and hope it will fit the original one.:

<em>Suppose ABC is a right triangle with sides a, b, and c and right angle at C. Find the unknown side length using the Pythagorean theorem and then find the values of the six trigonometric functions for angle B. when b=3 and c=4</em>.

My answer:

We will Pythagoras theorem, which states that the sum of squares of two legs of a right triangle is equal to the square of the hypotenuse of right triangle. Because the question says that ABC is a right triangle.

$a^2+b^2=c^2$

Given that: b=3 and c=4

$a^2+3^2=4^2a^2+9=16a^2+9-9=16-9a^2=7$

so a = $\sqrt{7}$

We know that tangent relates opposite side of a right triangle with adjacent side.

$\text{tan}(B)=\frac{a}{b}\\\text{tan}(B)=\frac{\sqrt{7}}{3}$

Please have a look at the attached photos.

3 0

3 years ago

Swimming Pool On a certain hot summer's day, 345 people used the public swimming pool. The daily prices are $1.50 for children a

Natasha2012 [34]

Answer:

143

Step-by-step explanation:

just took the test

6 0

3 years ago

Read 2 more answers

Solve open parentheses square root of 7 close parentheses to the 6 x power = 49x−6.

LUCKY_DIMON [66]

(sqrt7)^6x = 49x - 6

There is no easy way to solve this . Drawing a graph will give a good approximation.

Draw y = (sqrt7)66x

and y = 49x - 6 and see where they intersect

Ill draw it on desmos graphing tool and give you the link.

7 0

3 years ago

How to know if a problem is permutation or combination?

vredina [299]

If the order matters it is a permutation. For example: if you are selecting 3 people to be on a committee it doesn't matter what order you select them, but if you're selecting three people to be president, vice president, and secretary the order in which you choose them matters the first person being president, the second person being vice president, and the third person be secretary

6 0

2 years ago