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3 years ago

Halp me please i don't wanna fail...I wanna pass this test ;--; (MUST BE A EXPRESSION)

Mathematics

2 answers:

vaieri [72.5K]3 years ago

6 0

Answer:

155+27n

Step-by-step explanation:

hope this helps

RSB [31]3 years ago

4 0

Answer:

142 I hope that helpes

Step-by-step explanation:

30+15= 45 and 85+12= 97 45+97= 142

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Please answer a and b

Assoli18 [71]

Answer:

(-2,1) (-1,1),(0,1)

Step-by-step explanation:

find the gradient first

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2 years ago

an 8 by 19 ft wall has three 4 by 5 ft windows.the area of the three windows is what percent of the area of the entire wall (inc

erica [24]

Answer:

39.5% (3 sf)

Step-by-step explanation:

Area of 1 window: 4×5 = 20 ft²

2 windows: 3×20 = 60ft²

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Percentage of window area:

60/152 × 100 = 39.47368421%

= 39.5% (3 sf)

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2 years ago

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MariettaO [177]

Answer:

Step-by-step explanation:

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2 years ago

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Which expression is equivalent to (-4y - x) - (3y - 9x)

WINSTONCH [101]

Answer: -7y+8x

Step-by-step explanation: I assume you mean to simplify

Step 1: Remove parentheses : -4y - x - (3y - 9x)

Step 2: -(3y - 9x) = -3y + 9x

Step 3: Simplify: -4y - x - 3y +9x

Step 4: Answer: -7y+8x

4 0

2 years ago

Two kinds of perfume are packaged in square pyramidal bottles. Perfume A is packaged in a bottle with a base of 3 inches square

kondor19780726 [428]

Answer:

The bottle of perfume A contains more glass

Step-by-step explanation:

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 triangular faces

step 1

Find the surface area of Perfume A

$SA=3^{2} +4[\frac{1}{2}(3)(2.5)]=24\ in^{2}$

step 2

Find the surface area of Perfume B

$SA=2.5^{2} +4[\frac{1}{2}(2.5)(3)]=21.25\ in^{2}$

step 3

Compare the surface areas

$24\ in^{2}>21.25\ in^{2}$

therefore

The bottle of perfume A contains more glass

6 0

2 years ago