3 years ago

A bookstore is having a 30% off sale diary of a wimpy kid books are now $6.30 each what was the original price of the books

Mathematics

1 answer:

Maslowich3 years ago

3 0

Answer:

$8.19

Step-by-step explanation:

because when you do this you want to add 30 to 6.30 and move the decimal 2 numbers over

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Natalija [7]

The box plot shows the range and quartiles of the data. It does not show numbers or the mean. The only appropriate choice is

... The lower quartile for the data

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4 years ago

Isosceles triangle $ABE$ of area 100 square inches is cut by $\overline{CD}$ into an isosceles trapezoid and a smaller isosceles

emmainna [20.7K]

Answer:

5 inches

Step-by-step explanation:

See attachment for explanation.

4 0

3 years ago

A bag contains 10 black, 15 white, and 25 blue marbles. What is the probability of randomly selecting one

gulaghasi [49]

Answer: 0.8 or 80%

Step-by-step explanation:

First find the total number of marbles:

10 + 15 + 25 = 50 marbles total

To find the number of marbles that are not black:

15 + 25 = 40 marbles that are not black

Set up ratio:

$\frac{40}{50}$ = 0.8 or 80%

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3 years ago

(0,-4),(1,0),(2,2) find a quadratic function in standard form for each set of points.

Sphinxa [80]

We are given the points
<span>(0,-4),(1,0),(2,2)
The standard form a quadratic function (in terms of x) is
y = Ax2 + Bx + C
Subsitute the points
-4 = 0 + 0 + C
C = -4

0 = A + B - 4

2 = 4A + 2B - 4

Solve for A and B
A = -1
B = 5

The function is
y = -x2 + 5x - 4</span>

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3 years ago

Find the surface area of the rectangular prism

Umnica [9.8K]

Answer:

185.68 cm3

Step-by-step explanation:

SA = 2 (L x W) + 2 (L x H) + 2 (W x H)

= 2 (8.2 x 3.4) + 2 (8.2 x 5.6) + 2 (3.4 x 5.6)

= 2 (27.88) + 2 (45.92) + 2 (19.04)

= 55.76 + 91.84 + 38.08

SA = 185.68 cm3

4 0

3 years ago