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Tanzania [10]
3 years ago
11

CAN SOMEONE PLZ HELP! need help with 14 and 15

Mathematics
1 answer:
Vanyuwa [196]3 years ago
3 0
Oh this is super easy okay so the hypothesis is the long size and the Pythagorean theorem is a2+b2=c2

So 7(2) can be a2 ( or b2 it doesn’t matter)

So let’s put this in the equation

7(2)+b2=c2

So c2 is always ALWAYS gone be the hypothesis (long side) so it’s 10(2)

49+b2=100

So since we don’t have a b2 we’re gonna SUBTRACT

100+49= 149

Now take the squareroot

149= 12.206 so this is the answer

Now you do number 15 by yourself and I help you in the comments!!!! :)
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Can sum one help me please​
Otrada [13]

Answer:

1 7/8 ( last one )

Step-by-step explanation:

3/4 x 5/4

15/8 = 1 7/8

If this helps you, please mark brainliest!

3 0
3 years ago
Read 2 more answers
What is the sum of the geometric sequence 3,12,48... if there are 8 terms?
s344n2d4d5 [400]

Answer:

  C)  65,535

Step-by-step explanation:

You can add up the 8 terms ...

  3, 12, 48, 192, 768, 3072, 12288, 49152

to find their sum is 65535.

_____

<em>Estimating</em>

Knowing the last term (49152) allows you to make the correct choice, since the sum will be more than that and less than double that.

_____

<em>Using the formula</em>

You know the formula for the sum of a geometric sequence is ...

  S = a1(r^n -1)/(r -1)

where a1 is the first term (3), r is the common ratio (4), and n is the number of terms (8).

Filling in the values, you find the sum is ...

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6 0
3 years ago
Math help 20 points<br> help
astra-53 [7]

Answer:

1. x =8

2.  x=9

Step-by-step explanation:

Since these figures are parallelograms, the opposite sides are equal.

1.     6 = 2x-10

Add 10 to each side

   6+10 = 2x-10+10

   16 = 2x

Divide  each side by 2

16/2 = 2x/2

 8 =x


2.  x+14 =23

    Subtract 14 from each side

x+14-14 = 23-14

x = 9



6 0
3 years ago
What is the value of the missing exponent in the equation 0.583 X 10 = 583 ?
alina1380 [7]

Answer:

3

Step-by-step explanation:

0.583 times 10 to the power of 3 moves the decimal point 3 places to the right to make it 583

5 0
3 years ago
Help me pls u need it
marishachu [46]
Call the number of blue jays b and the number of robins r

We are told there are twice as may robins as blue jays:
r=2b
and, there are 21 birds in total:
r+b=21
thus, by substitution:
2b+b=21
combine like terms:
3b=21
solve for b:
b=7
back substitute:
r=2(7)
r=14

There are 7 blue jays and 14 robins.
7 0
3 years ago
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