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2 years ago

Given Triangle DEF is isosceles and angle D is the vertex angle, Find x, DE, DF, EF

Mathematics

1 answer:

ch4aika [34]2 years ago

4 0

Answer:

x=2;DE,EF=9,DF=5

Step-by-step explanation:

Since DEF is isoceles, you can set the equations

x+7 and 2x+5 equal to each other

x+7=2x+5, now solve for x

-x=-2,

x=2, now plug in for each side

DE,EF=9

DF=3(2)-1=5

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Does anyone know c & d please

Afina-wow [57]

Subtract the powers
c. 9-7 so 10^2
d. 8-1 so 5^7

7 0

2 years ago

Read 2 more answers

Suppose that the ages of members in a large billiards league have a known standard deviation of σ = 12 σ=12sigma, equals, 12 yea

asambeis [7]

Answer:

$n\geq 23$

Step-by-step explanation:

-For a known standard deviation, the sample size for a desired margin of error is calculated using the formula:

$n\geq (\frac{z\sigma}{ME})^2$

Where:

$\sigma$ is the standard deviation
$ME$ is the desired margin of error.

We substitute our given values to calculate the sample size:

$n\geq (\frac{z\sigma}{ME})^2\\\\\geq (\frac{1.96\times 12}{5})^2\\\\\geq 22.13\approx23$

Hence, the smallest desired sample size is 23

3 0

2 years ago

What multiples to -64 and adds to -12

tiny-mole [99]

Answer:

Sum :- -76 Product :- 768

Step-by-step explanation:

4 0

2 years ago

Please help me tysm if you do

Whitepunk [10]

Answer:

R=155°

S=25°

T=155°

Step-by-step explanation:

R + 25° =180°

R = 180° - 25°

R = 155°

(2) S + 155° =180°

S = 180° - 155°

S = 25°

T = R because t is opposite of r

I hope this was helpful

4 0

3 years ago

The dishwater uses 32 gallons of water to wash 4 loads of dishes. How many gallons of water will the dishwasher use to wash 12 l

maw [93]

Answer:

96 gallons

Step-by-step explanation:

32 divided by 4 = 8 gallons per load

8 x 12 = 96

5 0

2 years ago