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Svet_ta [14]
3 years ago
10

What is the solutionto the equation √x^2+2x-25=√x+5

Mathematics
1 answer:
Nadya [2.5K]3 years ago
4 0

Answer:

Move  

√ x +5  to the left side of the equation by subtracting it from both sides.

√ x 2 + 2 x − 25 − √ x + 5= 0

Graph each side of the equation. The solution is the x-value of the point of intersection.

<u><em>x = 5</em></u>

Hope this helped!!  :)

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A square pyramid has a height of 12 feet. Each side to of base is 7 feet long. use the following formula to calculate the pyrami
MissTica
Let's find the area of the base first:
7×7=49
The S stands for the sides of the base. Since you are multiplying them by each other, you are basically squaring them.

Let's now multiply the area of the base by the height.
49×12=588

Now, let's multiply by 1/3.
588×1/3 or 588÷3
196

So, the volume is 196 ft³.
4 0
3 years ago
The rectangle shown is dilated by a scale factor of 1/5
Harrizon [31]

Answer:

A'B'= 3 cm and B'D' = 1.6 cm

Step-by-step explanation:

First of all, we are told that the scale factor = 1/5

Now,we know that If the scale factor is less than 1, then the dilation is a reduction.

Thus, in this question the dilation is a reduction.

For us to calculate the dimensions of the dilated rectangle, we'll multiply the original dimensions by the scale factor

Thus;

A'B' = AB(1/5)

A'B' = 15(1/5) = 3 cm

B'D' = BD(1/5) = 8(1/5) = 1.6 cm

Thus, The length of each side of the dilated rectangle are;

A'B'= 3 cm and B'D' = 1.6 cm

5 0
3 years ago
Consider a sequence whose first three
snow_tiger [21]

Answer:

Below, depends if 27 is term number 1 or term number 0.  Answered for both cases.  

Step-by-step explanation:

The most common sequences are arithmetic and geometric, so lets check those first.

Arithmetic first since its the easiest.

to go from 27 to 21 we subtract 6, if we subtract 6 from 21 again we get to 15, which is what we need, so it is indeed arithmetic.

Explicit formula is basically of the form of y=mx+b with an arithmetic sequence.  the m is the common difference and b is the first term minus the common difference.  so lets fill those in.  y = -6x + 33

Then it usually has n as the x and y f(n) so we'll just put those in

f(n) = -6n + 33

This si as long as the first term is labeled as term number 1 and not term number 0.  if you have 27 as term 0 instead just make 33 back to 27, so f(n) = -6n + 27

Let me know if this doesn't make sense.

5 0
3 years ago
What is the value of cos x°?
PolarNik [594]

Answer:

We know,

\cos(x)  =  \frac{b}{h}  =  \frac{15}{17}

so

\cos(x)  = 0.88

.....Hope this helps:)

3 0
2 years ago
The monthly salary of a staff working in a doll shop is Rs. 7,500. She sold the dolls of Rs. 1,20,000 in a month. If she earned
Arte-miy333 [17]

Answer:

I think the equation is 12000=7500r

I think the rate of commission is 16

Step-by-step explanation:

hope this helps, and donate a brainliest if possible... thx

3 0
3 years ago
Read 2 more answers
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