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3 years ago

So umm I’m dumb and I need help with this problem

Mathematics

1 answer:

cupoosta [38]3 years ago

5 0

Answer:

A = 17.5

Step-by-step explanation:

Step 1: Find the base

Base = 7 units

Step 2: Find the height

Height = 5 units

Step 3: Plug your 2 variables into the Area Formula

A = 1/2bh

A = 1/2(7)(5)

A = 1/2(35)

A = 35/2

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$10.82 for 2 earmuffs markup rate is 72%. what is the markup and retail price for 2 earmuffs

Katarina [22]

Markup=10.82(72/100)≈$7.79 (to nearest cent)

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2 years ago

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Annie is framing a photo with a length of 6 inches and a width of 4 inches. The distance from the edge of the photo to the edge

Ede4ka [16]

Answer:

Part a) The quadratic function is $4x^{2} +20x-39=0$

Part b) The value of x is $1.5\ in$

Part c) The photo and frame together are $7\ in$ wide

Step-by-step explanation:

Part a) Write a quadratic function to find the distance from the edge of the photo to the edge of the frame

Let

x----> the distance from the edge of the photo to the edge of the frame

we know that

$(6+2x)(4+2x)=63\\24+12x+8x+4x^{2}=63\\ 4x^{2} +20x+24-63=0\\4x^{2} +20x-39=0$

Part b) What is the value of x?

Solve the quadratic equation $4x^{2} +20x-39=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem

we have

$4x^{2} +20x-39=0$

$a=4\\b=20\\c=-39$

substitute in the formula

$x=\frac{-20(+/-)\sqrt{20^{2}-4(4)(-39)}} {2(4)}$

$x=\frac{-20(+/-)\sqrt{1,024}} {8}$

$x=\frac{-20(+/-)32} {8}$

$x=\frac{-20(+)32} {8}=1.5\ in$ -----> the solution

$x=\frac{-20(-)32} {8}=-6.5\ in$

Part c) How wide are the photo and frame together?

$(4+2x)=4+2(1.5)=7\ in$

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3 years ago

A cookbook cost 3 times as a storybook.A cookbook and 4 storybook cost $112.How much did a storybook cost?

Reptile [31]

1c+4s=112
1c=3s
3s+4s=112
7s=112
Storybook= $16

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3 years ago

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Charmaine runs 6miles in 45 minutes at the same rate how many minutes would she take to run 4 miles

Crazy boy [7]

Answer:

I believe its 24 minutes or 30 minutes

Step-by-step explanation:

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3 years ago

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ANSWER THE FOLLOWING:

Bogdan [553]

Answer:

1. (a) 1/12

(b)35/36

2. Blue - 1/3

Red- 4/15

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2 years ago