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lutik1710 [3]
3 years ago
11

would you choose to use a hundred chart to solve 90- 80? why or why. not ? if not. which strategy would work better?

Mathematics
1 answer:
Vilka [71]3 years ago
6 0
Yes beacause they aré both close to the number 100
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Rachel earned $89.70 on Tuesday she spent $55.89 at the grocery store how much money does she have left
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she has 33.81 dollars left
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3 years ago
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A water tanks can hold 234 cubic feet of water.How many gallons can the water tank hold
Veseljchak [2.6K]

1 cubic foot has 7.48 gallons of water.

Volume of water tank = 234 cubic feet

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Hence, the water tank can hold 1750.32 gallons of water.

4 0
3 years ago
Need help! Anyone know?
antiseptic1488 [7]
It’s 90 degrees because it’s a right angle
6 0
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A rectangle has the following vertices. Find the area of the rectangle. (9, −1), (−1, 7), (−5, 2), (5, −6)
stiks02 [169]

Answer:  82 sq. units .

Step-by-step explanation:

Let A (9, −1), B (−1, 7), C(−5, 2), D(5, −6) are the vertices of rectangle.

Then we plot them on graph ( as provided in attachment)

Length = AB =\sqrt{(9+1)^2+(-1-7)^2} units  [By distance formula : \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}]

=\sqrt{(10)^2+(-8)^2}=\sqrt{100+64}=\sqrt{164}=2\sqrt{41} units

Width = BC = \sqrt{(-1+5)^2+(7-2)^2} units

=\sqrt{4^2+5^2}\\\\=\sqrt{16+25}\\\\=\sqrt{41}

Area = length x width

= 2\sqrt{41}\times\sqrt{41}=2\times41= 82\text{ sq. units}

Hence, the  area of the rectangle is 82 sq. units .

7 0
3 years ago
What is the slope of a line perpendicular to the line whose equation is 2x-y=5 ?
mariarad [96]

Answer:

-1/2

Step-by-step explanation:

the slope of the line 2x-y=5 is 2

a perpendicular line has the negative reciprocal of the slope of the other line

hopefully this helps :)

3 0
3 years ago
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