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3 years ago

Use the Properties of Equality to solve each equation.

1 answer:

4 0

1) answer is 8 because 8 + 7 = 15

2) answer is 8 because 8 + 18 = 26

3) answer is 25 because 25 - 6 = 19

4) answer is -1 because -1 - 3 = -4

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Help need answer ASAP due in 10 minutes

enyata [817]

Answer:

1) about 9 or 8.7

2) 4

3) about 5 or 4.5

4) 2

5) about 4 or 4.4

6) 2

4 0

3 years ago

Points A, B, and C are midpoints of the sides of right triangle DEF.

Radda [10]

Answer:

1) True 2) True 3) False 4) True

Step-by-step explanation:

In this question let's verify those options

1.Triangle A B C is inside triangle D E F. (true)

If A, B and C are midpoints of DEF then connecting those midpoints we have an interior triangle.

2. Point A is the midpoint of side F D, point B is the midpoint of side D E, point C is the midpoint of side F E. (true)

3. Angles D F E and A B C are right angles. (false)

These triangles are similar. And In this case, the right angles are:

$E\hat{D}F\cong A\hat{C}B=90^{\circ}\\\measuredangle D=\measuredangle C=90^{\circ}$

D and C are opposed to the larger side, and not F, and B

Because: $\measuredangle F\cong\measuredangle B \neq90^{\circ}$

4. The length of D E is 10 centimeters, the length of F D is 6 centimeters, and the length of F E is 8 centimeters. (true)

Let's test this by the Pythagorean Theorem. For DE is the hypotenuse and FD and FE is their legs.

$\overline{DE}=\sqrt{FD^{2}+FE^{2}}\\\overline{DE}=\sqrt{8^{2}+6^{2}}\\10= \sqrt{100}\\10=10$

8 0

3 years ago

Read 2 more answers

PLEASE HELP WILL MARK BRAINLIEST<br><br><br>download pdf to see question

Vladimir [108]

Answer:

kkkkkkkkkkkkkkkkkkkk

4 0

3 years ago

What is the value of x that makes sense the given equation true? 4x-3=-12x+13

Eva8 [605]

X=1 is the answer to your question

4 0

3 years ago

Read 2 more answers

A state park has a normally distributed daytime temperatures in the month of June. The mean temperature is 75 Fahrenheit and the

vesna_86 [32]

Answer:

0.16

Step-by-step explanation:

This probability is the area under the standard normal curve to the right of 82. Note that 82 is ONE standard deviation above the mean: 75 + 7 = 82.

According to the Empirical Rule, 68% of data lies within one standard deviation of the mean. In other words, 34% lies between the mean and one standard deviation above the mean. The remaining area under the standard normal curve is thus (100% - 68%), or 32%. Half of that is 16%.

The probability that the temperature is above 82, or above 1 standard deviation above the mean, is 16%, which we can also express as 0.16.

Alternatively, use a calculator with built-in statistical functions. In this case the desired result is found by executing the following command:

normcdf(82, 10000, 75, 7). The desired result is 0.1587, or approximately 0.16.

6 0

3 years ago