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3 years ago

Ty has a $30 gift card. He already bought a $9 book, and wants to buy $3

Mathematics

2 answers:

alexdok [17]3 years ago

7 0

Answer:

ty can buy 7 journals

Step-by-step explanation:

Georgia [21]3 years ago

5 0

Answer:

7 Journals

Step-by-step explanation:

$30-$9=$21

$21/$3=7

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Help me please please

Hoochie [10]

Answer:

a is the correct one

Step-by-step explanation:

7 0

3 years ago

This diagram shows a right square pyramid and some of its dimensions. What is the volume of the pyramid?

ZanzabumX [31]

Answer:

Volume of square Pyramid is 48 cubic inches.

Option A is correct option.

Step-by-step explanation:

Height of Pyramid = 4 in

Length of Base = 6 in

We need to find volume of square pyramid

The formula used is:

$Volume\: of\: Square\: Pyramid=\frac{1}{3}\times A \times h$

Where A is area of base and h is height.

$Area\: of\: Base =(Length)^2= 6^2 = 36$

Now, putting values of A = 36 and h = 5 and finding volume

$Volume\: of\: Square\: Pyramid=\frac{1}{3}\times A \times h\\Volume\: of\: Square\: Pyramid=\frac{1}{3}\times 36 \times 4\\Volume\: of\: Square\: Pyramid=12 \times 4\\Volume\: of\: Square\: Pyramid=48 \: cubic\:inches$

So, Volume of square Pyramid is 48 cubic inches.

Option A is correct option.

8 0

3 years ago

I need help or I fail 7th grade

salantis [7]

Choose the third box

7 0

3 years ago

If 4SINB=3SIN(2A+B) :<br> Prove that:7COT(A+B)=COTA

pickupchik [31]

Answer:

Step-by-step explanation:

Given the expression 4sinB = 3sin(2A+B), we are to show that the expression 7cot(A+B) = cotA

Starting with the expression

4sinB= 3sin(2A+B)

Let us re write angle B = (A + B) - A

and 2A + B = (A + B) + A

Substituting the derived expression back into the original expression ww will have;

4Sin{(A + B) - A } = 3Sin{(A + B)+ A}

From trigonometry identity;

Sin(D+E) = SinDcosE + CosDSinE

Sin(D-E) = SinDcosE - CosDSinE

Applying this in the expression above;

4{Sin(A+B)CosA - Cos(A+B)SinA} = 3{Sin(A+B)CosA + Cos(A+B)sinA}

Open the bracket

4Sin(A+B)CosA - 4Cos(A+B)SinA = 3Sin(A+B)CosA + 3Cos(A+B)sinA

Collecting like terms

4Sin(A+B)CosA - 3Sin(A+B)cosA = 3Cos(A+B)sinA + 4Cos(A+B)sinA

Sin(A+B)CosA = 7Cos(A+B)sinA

Divide both sides by sinA

Sin(A+B)CosA/sinA= 7Cos(A+B)sinA/sinA

Since cosA/sinA = cotA, the expression becomes;

Sin(A+B)cotA = 7Cos(A+B)

Finally, divide both sides of the resulting equation by sin(A+B)

Sin(A+B)cotA/sin(A+B) = 7Cos(A+B)/sin(A+B)

CotA = 7cot(A+B) Proved!

4 0

3 years ago

A cellular service provider charged a customer $40 for 150 minutes of airtime. The same provider charged another customer $55 fo

defon

Answer:

Y=10x-250

Step-by-step explanation:

We can treat this problem like we are attempting to graph a line from 2 points (hopefully you know how to do that)

the two points are (40,150)(55,300)

7 0

3 years ago