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3 years ago

Find the sum -15+-32=

Mathematics

1 answer:

dezoksy [38]3 years ago

7 0

Answer:

-47

Step-by-step explanation:

- (15 + 32)

- (47)

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Plz help me asap. Plz help help help

Leya [2.2K]

The answer is 10 because 9x5=45 then you do 45-15=30 then you divide by 3 which is 10.
Your welcome

5 0

2 years ago

4. Tyrone needs to save $100 to pay for his trip to

erik [133]

Answer:

<u>6 hours</u>

Step-by-step explanation:

Subtract saved amount from required amount :

$100 - $45.50
$54.50

Divide by the pay rate :

$54.50 / $9.25
5.89 ≅ 6

Tyrone must work at least <u>6 hours</u> to have $100 saved.

8 0

1 year ago

Definition of transposition of formulae

neonofarm [45]

The process of expressing w in terms of A and l is called transposition or changing the subject of the formula. The methods used to change the subject of the formula are the same as those used for solving equations.

6 0

2 years ago

1. Bob tried to answer the following question by finding the missing angle and rounding the answer to the nearest degree.

iren2701 [21]

Answer:

Part 1)

Bob's mistake was to have used the cosine instead of the sine

The measure of the missing angle is $53.13\°$

Part 2) The surface area of the pyramid is $288\ cm^{2}$

Step-by-step explanation:

Part 1)

Let

x----> the missing angle

we know that

In the right triangle o the figure

The sine of angle x is equal to divide the opposite side angle x to the hypotenuse of the right triangle

$sin(x)=\frac{16}{20}$

$x=arcsin(\frac{16}{20})=53.13\°$

Bob's mistake was to have used the cosine instead of the sine

Part 2) we know that

The surface area of the square pyramid is equal to the area of the square base plus the area of its four lateral triangular faces

$SA=b^{2}+4[\frac{1}{2}(b)(h)]$

where

b is the length side of the square

h is the height of the triangular lateral face

In this problem

$h=b/2$ -------> by an 45° angle

$b=2h$

$sin(45\°)=\frac{h}{6\sqrt{2}}$

$h=6\sqrt{2}(sin(45\°))=6\ cm$

Find the value of b

$b=2(6)=12\ cm$

Find the surface area

$SA=12^{2}+4[\frac{1}{2}(12)(6)]=288\ cm^{2}$

3 0

3 years ago

At the fair the 'Twirly Tea Cups'ride can hold nine people per tea cup.If the ride has seven tea cups,how many total people can

Kamila [148]

63 people should be able to fit in because 7 times 9 is 63.

If I'm wrong, contact me.

6 0

3 years ago

Read 2 more answers