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satela [25.4K]
3 years ago
12

Square root of 5625​

Mathematics
2 answers:
devlian [24]3 years ago
6 0

Answer:

75

Step-by-step explanation:

75 × 75 = 5625

75² = 5625

nataly862011 [7]3 years ago
6 0

Answer:

75

Step-by-step explanation:

5625 is a mult. of 5 so check 5s also mult. of 3 too.

45?no

75? yes

guess and check possible answers- it had to end in 5, multiple of  3.

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What does a equal 13/a = 39/45
Firlakuza [10]

Answer:

15

Step-by-step explanation:

a represents 15

13/a= 39/45

We multiply 13*3 to get the denominator 39 on the right hand side.

So this means if we multiply the numerator by 3, we also multiply the denominator by 3 as well.

So, if 13*3= 39, then what number will give us 45?

To get that number, we divide 3 into 45 to get 15

Therefore a is 15

6 0
4 years ago
Joanna is paid $14 per hour
murzikaleks [220]
What’s the question?
7 0
3 years ago
HELP!! joels apartment building is 42 ft tall and casts a shadow of 20ft. If Joel is 6 ft tall, how long is his shadow
zhenek [66]

Step-by-step explanation:

an object and its shadow create a right-angled triangle.

2 objects and their shadows create 2 similar right-angled triangles.

that means the angles are the same, and the side lengths of one triangle all correlate with the corresponding side lengths of the other triangle via the same factor.

so,

42 × f = 6

f = 6/42 = 1/7

the length of Joel's shadow is then

20 × f = 20 × 1/7 = 2.857142857... ft

5 0
3 years ago
Graph the six terms of a finite series where a1 = −3 and r = 1.5.
s344n2d4d5 [400]
We are given the first term and the common ratio, this means they belong to a geometric series.

For the given series:

a_{1}=-3 \\ 
r=1.5

Each term of the geometric series is obtained by multiplying the previous term by common ratio.

So the next terms will be:

-4.5, -6.75, -10.125, -15.1875, -22.78125

The general formula for the G.P would be:

a_{n}=-3(1.5)^{n-1}

On plotting the series, the result will be like this:

6 0
4 years ago
Read 2 more answers
If the complex number x = 3 + bi and |x|^2 = 13, which is a possible value of b?
olga55 [171]

If x=3+bi, then

|x|=\sqrt{3^2+b^2}.

You know that |x|^2=13, then

\left(\sqrt{3^2+b^2}\right)^2=13,\\ \\ 9+b^2=13,\\ \\b^2=4,\\ \\b=\pm 2.

Two possible complex numbers satisfy these conditions:

x_1=3+2i, \ x_2=3-2i.

As you can see the possible value of b is 2.

Answer: correct choice is A.

3 0
3 years ago
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