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2 years ago

John has $65 in his piggy bank. He wants to buy a new gaming

Mathematics

2 answers:

Bumek [7]2 years ago

8 0

John need to save 2 dollars for 96 days

alekssr [168]2 years ago

4 0

Answer:

96 days

Step-by-step explanation:

Since he already has $65 we will subtract this from $257. This leaves us with $192 to earn. Dividing $192 by 2 (Because John is getting $2 per day) will result in 96.

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When 4a-9b=22 and b= -2, what is the value of a? A.-10/3 B.-14/9 C.1 D.4 E.10

ycow [4]

4a-9b=22

substitute b=-2

4a -9(-2) = 22

4a +18 =22

subtract 18 from each side

4a = 4

divide by 4

a =1

Choice C

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3 years ago

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Nine times fours is what

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Answer:

Step-by-step explanation:

9 x 4 =46

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A pizza shop has available toppings of anchovies, mushrooms, peppers, onions, olives, bacon, pepperoni and sausage. How many dif

Natalka [10]

Answer:

4 toppings*8 = 24

Step-by-step explanation:

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2 years ago

12v+10v+14=80 solve the equation

krok68 [10]

Answer:

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Step-by-step explanation:

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3 years ago

PLEASE HELP!!!

never [62]

Answer:

Lee has more pizza

Lee has 2.24 in^2 more than John

Step-by-step explanation:

step 1

Find the area of each slice of pizza

$A=\frac{1}{8}\pi r^{2}$

we have

$r=16/2=8\ in$ ----> the radius is half the diameter

substitute

$A=\frac{1}{8}\pi 8^{2}$

$A=8\pi\ in^{2}$

step 2

Find the area of John's part (area of shaded triangle)

The measure of the central angle of each slice of pizza is equal to

$360\°/8=45\°$

the height of triangle is equal to the base

Let

x ---->the base of the shaded triangle

$cos(45\°)=\frac{x}{r}$

$cos(45\°)=\frac{x}{8}$

Remember that

$cos(45\°)=\frac{\sqrt{2}}{2}$

substitute

$\frac{\sqrt{2}}{2}=\frac{x}{8}$

solve for x

$x=4\sqrt{2}\ in$

Find the area of shaded triangle

$A=(1/2)(4\sqrt{2})(4\sqrt{2})=16\ in^2$

step 3

Find the area of Lee's part

The area of Lee's part is equal to the area of two slices of pizza minus the area of two triangles

$2(8\pi)-2(16)=(16\pi-32)\ in^2$

assume

$\pi =3.14$

$(16(3.14)-32)=18.24\ in^2$

Lee's part is greater than John part's

Find the difference

$18.24-16=2.24\ in^2$

therefore

Lee has more pizza

Lee has 2.24 in^2 more than John

6 0

2 years ago