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Sophie [7]
3 years ago
7

Guys please help me please

Mathematics
1 answer:
Gelneren [198K]3 years ago
8 0

Answer:

x=7 , AB=9 , AC= 12

Step-by-step explanation:

12÷x+2 = 4÷x-4

4x+8=12x-48

56=8x

7=x

AB=x+2=7+2=9. AC=(x+2)+(x-4)=9+(7-4)=9+3=12

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Please help <br> thank you
Scrat [10]
Question 1:

Use the Pythagorean theorem.

If c^2\ \textless \ a^2+b^2, then the angle is acute.
If c^2=a^2+b^2, then the angle is right.
If c^2\ \textgreater \ a^2+b^2, then the angle is obtuse.

a=18
b=80
c=81

c^2=6561
a^2+b^2=324+6400=6724

\boxed {c^2\ \textless \ a^2+b^2}

Thus, the angle is acute.

Question 2:

Take the square root of the area to get the side length.

\sqrt{200} = \sqrt{100*2} =10 \sqrt{2}

That's the side length. Since we have a 45-45-90 right triangle if we divide the square across its diagonal, we just multiply the side length by the square root of 2 in order to get the diagonal length.

10 \sqrt{2} *  \sqrt{2}
=20

Your answer is 20 m. Hope this helps! :)
7 0
4 years ago
PLEASE HELP ME!!
gizmo_the_mogwai [7]

Answer:

$4375

Step-by-step explanation:

Add up all the sides to get the perimeter:

240 + 285 + 450 + 450 + 450 = 1875 ft

Convert ft into yards:

3 ft = 1 yard

1875 ft = 625 yards

________________________________

(625 yards)($27) = $4375

8 0
3 years ago
HEELPPPPPP I NEED HELPPPP
lora16 [44]

Answer: the anser is

Step-by-step explanation:

9/24= 0.375 0.375x40=15

w=15 liters

8 0
3 years ago
Find three consecutive even integers such that the sum of the first, twice the second, three times the third is -76. What is the
ss7ja [257]

Answer:

The numbers are -14,-13 and -12

Step-by-step explanation:

<u><em>The correct question is </em></u>

Find three consecutive integers such that the sum of the first, twice the second and three times the third is -76. What is the number?

Let

x ----> the first consecutive integer

x+1 ---> the second consecutive integer

x+2 ---> the third consecutive integer

we have that

x+2(x+1)+3(x+2)=-76

solve for x

apply distributive property

x+2x+2+3x+6=-76

Combine like terms

6x+8=-76

subtract 8 both sides

6x=-76-8

6x=-84

Divide by 6 both sides

x=-14

so

x+1=-14+1=-13

x+2=-14+2=-12

therefore

The numbers are -14,-13 and -12

3 0
4 years ago
The distribution of certain test scores is a nonstandard normal distribution with a mean of 50 and a standard deviation of 6. Wh
love history [14]

Answer:

Mean value is 0 and standard deviation is 1 after all test scores have been standardized by converting them to ​z-scores using z

Step-by-step explanation:

In a standard normal distribution (also called as <em>Gaussian distribution</em>) all values of the sample can be projected to a normal distribution with mean 0 and standard deviation 1 using their z-scores.

z-score of a value X can be calculated as follows:

z=\frac{X-50}{6} where

  • 50 is the <em>mean of the test scores</em>
  • 6 is the <em>standard deviation of test scores</em>
6 0
4 years ago
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