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Andreyy89
3 years ago
12

PLEASE HELP I NEEED HELP ASAP

Mathematics
1 answer:
dolphi86 [110]3 years ago
6 0

Answer:

B

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} ⇔ \sqrt{ab} and

\sqrt{-1} = i

Given

\sqrt{-80}

= \sqrt{16(5)(-1)}

= \sqrt{16} × \sqrt{5} × \sqrt{-1}

= 4 × \sqrt{5} × i

= 4i\sqrt{5} → B

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Please help me this will mark brainiest thx I will appreciate it thank you
Savatey [412]

Answer:

z=40 degrees

x=90 degrees

y=40 degrees

Step-by-step explanation:

To solve z you know that 50+90+z= 180 degrees. So z equals 40. To solve x you subtract 90 from 180 to get 90 degrees. To solve you add 50+x+y. You know that x= 90. You would add the angles together to get 180 degrees. 50+90=140 and 180-140 equals 40. Sorry if i'm wrong.

6 0
2 years ago
HELP PLEASEEEEEEEEEEE
Georgia [21]

Answer:

24 yards

Step-by-step explanation:

your problem is area. area is lxh. the length is 8 and the height is 8. 6x3 is 24 yards

8x3=24 ^{2} yrds

6 0
3 years ago
Do Now-Find the size of a flat-screen tv given the length and
nika2105 [10]
500 area
90 perimeter
7 0
3 years ago
Read 2 more answers
A tank weighs 5.6kg when it 1/4 filled with water.If it weighs 10.4kg when it is full ,what will be it's weight when it is empty
Schach [20]

Answer:

4 kg

Step-by-step explanation:

so 1.6 * 4 is 6.4 so you just double check if you want

4 + 1.6 which is 1/4 of 6.4 will be 5.6 (matches with the question)

4 + (1.6*4) (indicates it's full) = 10.4( also Matches with the question)

there is another way by setting up an equation. let me know in comments if you want to see it that way

7 0
1 year ago
This Question: 1 pt
horrorfan [7]

Answer: the length of the field is 70 yards. The width of the field is 35 yards

Step-by-step explanation:

Let L represent the length of the rectangular athletic field.

Let W represent the width of the rectangular athletic field.

A rectangular athletic field is twice as long as it is wide. This means that

L = 2W

The formula for determining the perimeter of a rectangle is expressed as

Perimeter = 2(L + W)

If the perimeter of the athletic field is 210 yards, it means that

210 = 2(L + W)

L + W = 210/2 = 105

Substituting L = 2W into L + W = 105, it becomes

2W + W = 105

3W = 105

W = 105/3 = 35

L = 2W = 2 × 35

L = 70

8 0
3 years ago
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