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sergeinik [125]
3 years ago
15

I need to know x . if you could also explain that would be nice

Mathematics
1 answer:
defon3 years ago
4 0

Answer:

x = 7.5

Step-by-step explanation:

Since the midsegment and the third segment of the triangle are parallel to each other, therefore,

\frac{8 + 10}{8} = \frac{6 + x}{6}

\frac{18}{8} = \frac{6 + x}{6}

\frac{9}{4} = \frac{6 + x}{6}

Cross multiply

9*6 = 4(6 + x)

54 = 24 + 4x

Subtract 24 from each side

54 - 24 = 4x

30 = 4x

Divide both sides by 4

30/4 = x

7.5 = x

x = 7.5

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The ratio of height between Joey and his girlfriend is 8:7. If Joey is 72 inches tall, how tall is his girlfriend in inches
olganol [36]
Ratio is Joey/girlfriend = 8/7=8x/7x.
8x is height of Joey.
8x=72
x=72/8=9

7x is height of Joey's girlfriend.
7x=7*9=63 in.
Answer: 63 in.


7 0
3 years ago
Read 2 more answers
3. Find the value of x in the diagram below<br>X<br>6 cm<br>5<br>4 cm<br>3 cm<br>R​
vazorg [7]

Answer:

4cm is the correct answer

8 0
3 years ago
If EFGH is a parallelogram, then ________
Paraphin [41]

Answer:

A parallelogram is a quadrilateral whose opposite sides are parallel and equal, opposite angles are equal, the sum of the interior angles is 360 degrees. Therefore, the parallelogram EFGH might be a rhombus.

Step-by-step explanation:

7 0
4 years ago
20POINTS
Jobisdone [24]

Solution: The test score that the teacher should expect from a student who did not attend her course is 37.

<u>Explanation:</u>

The teacher's equation for the line of best fit is y=0.7x+37

We know the equation for the line of the best fit is:

y=bx+a

Where:

b is slope of the equation. It represents the rate of change in y as one unit change in x.

a is the intercept. It represents the expected mean value of y when all x=0.

Therefore, in the given teacher's equation, the slope is 0.7 and intercept is 37.

Here the intercept means the average score of student who who did not attend her course.

Therefore, the test score that the teacher should expect from a student who did not attend her course is 37.

4 0
3 years ago
Read 2 more answers
When x-y=3 work out the value of 2x-2y
azamat

Answer:

6

Step-by-step explanation:

Given

2x - 2y ← factor out 2 from each term

= 2(x - y) ← substitute x - y = 3 into the expression

= 2(3)

= 6

8 0
4 years ago
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