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Keith_Richards [23]
3 years ago
15

Solve the proportion. 8/7 = n/9

Mathematics
1 answer:
RoseWind [281]3 years ago
5 0
\frac{8}{7} = \frac{n}{9}

Cross multiply the fractions:

7 \times n = 7n
8 \times 9 = 72

7n = 72

Divide both sides by 7 to get n by itself:

72 \div 7 = 10.28
n = 10.28

The value of n is 10.28.
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Which of the following theorems verifies that ABC ~ STU?
Lunna [17]

Answer:

B. AA

Step-by-step explanation:

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Invariably, the third unknown angle of both triangles would also be equal going by the third angle theorem.

Thus, based on the AA Similarity Theorem which says that two triangles are similar to each other if two corresponding angles of one is congruent to two angles in the other, ∆ABC ~ ∆STU.

4 0
2 years ago
What are the solutions to the equation x2 - 8x = 10
mojhsa [17]

Answer:

x = 4 ±√26

Step-by-step explanation:

Please write this as x^2 - 8x = 10, or x^2 - 8x - 10 = 0.  " ^ " indicates exponentiation.

Let's complete the square:

x^2 - 8 x can be rewritten as

x^2 - 8x + 16 - 16, and so

x^2 - 8x = 10 becomes x^2 - 8x + 16 - 16 - 10 = 0, or

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5 0
3 years ago
Help me with these please
mixas84 [53]

Answer:

A) SAS

Step-by-step explanation:

The picture gives us that two sides are congruent. We can see that an <em>angle</em> is congruent as well because they share a common point at their tip.

If we look at just the area of intersection, it looks like an X. Think of the X as two lines intersecting. Each side equals 180°, and because both triangles are made up of those sides, we can conclude that the angles are congruent as well.

Hope this helps!

3 0
2 years ago
The thickness of a part is to have an upper specification of 0.925 and a lower specification of 0.870 mm. the average of the pro
SVETLANKA909090 [29]
To solve this problem, we make use of the z statistic. The formula for the z score is:z score = (x – u) / swhere x is the sample value = 0.90, u is the sample mean = 0.917, and s is the standard deviation = 0.005
Therefore:z score = (0.90 – 0.917) / 0.005z score = -3.4
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Therefore there is a 99.97% chance that it will be above 0.90 mm
7 0
3 years ago
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