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Nina [5.8K]
3 years ago
5

Which expression is equivalent to square root 81/100?

Mathematics
2 answers:
patriot [66]3 years ago
6 0
I do believe that the answer is 9/10
natita [175]3 years ago
3 0

Answer:

the answer is 9/10


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Luna and Ginny each cast magic spells. The ratio of spells Luna casts to spells Ginny casts is represented in the tape diagram.
Anna35 [415]

Answer:

Ginny will cast  2525 spells

Step-by-step explanation:

The ratio of spells Luna casts to spells Ginny casts is:

Luna :4

Ginny :5

4 spells of Luna is equivalent to 5 spells of Ginny

1 spell of Luna is equivalent to 5/4 spells of Ginny

Luna casts 2020 spells

It means Ginny will cast 2020\times \dfrac{5}{4} spells

i.e. Ginny will cast  2525 spells

6 0
3 years ago
Read 2 more answers
Doctors are interested in seeing if lifting weights to alleviate back pain is effective. Twenty five volunteers are asked to ran
goldenfox [79]

Answer:

Comparing means from dependent samples.

Step-by-step explanation:

In the scenario described above, the 25 sampled individuals were used to test the effect of weightlifting on alleviating back pain. The samples used were not changed nor altered during the study as the same subjects who were tested to measure their level of pain before lifting weight were the same group subjected to the actual weight lifting test and again had their level of pain tested. Since only one group was involved in the study ( a single group was tested on neutral and actual treatment). Hence, the study used dependent samples to compare the average level of pain.

4 0
3 years ago
Why is the alamo important to us history?
Hatshy [7]
The battle of the Alamo is a long-recognized symbol of bravery in the face of unbeatable odds. Although the battle itself lasted only 90 minutes, it was the culmination of a 13-day siege by General Antonio López de Santa Anna's troops against the outnumbered inhabitants of the fort.
6 0
3 years ago
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What are all these . Please help I will mark Brainly
disa [49]

Answer:

for a the answer is 5 for b also 5 (the solution is also the same but the = sign will be >) and for c is true

Step-by-step explanation:

for a so its 2x=10 you divide it like this

<h3><u>2x</u>=<u>10</u></h3><h3>2    2 so the answer will be</h3><h3>x=5 so you mark 5</h3>
3 0
3 years ago
the hypotenuse of a 45°-45°-90° triangle measures 128 cm. What is the length of one leg of the triangle? 64 cm cm 128 cm cm
Kisachek [45]

Answer:

length of one leg of the triangle is 64 cm.

Step-by-step explanation:

Given : The hypotenuse of a 45°-45°-90° triangle measures 128 cm.

To find  : What is the length of one leg of the triangle.

Solution : We have given that hypotenuse of a 45°-45°-90° triangle measures 128 cm.

By the 45°-45°-90° triangle rule ,

Perpendicular sides  (legs) are equal .

Hypotenuse  =  √2 × either perpendicular side ( leg ).

128 = √2 ×  leg .

We can write 128 as  64 √2 and substitute in above

64√2 = √2 leg.

On dividing by √2 both sides and switching sides.

leg  = 64 cm .

Therefore,  length of one leg of the triangle is 64 cm.

7 0
3 years ago
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