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3 years ago

HELP! i’ll mark you as brainliest

Mathematics

2 answers:

Nadya [2.5K]3 years ago

7 0

Answer:

m<F = 79 degrees

Step-by-step explanation:

As per the given information;

m<E = 22, the triangle EDF (the one that is given in the picture) is isosceles (meaning that the sides are congruent).

In an isosceles triangle, (a triangle where the sides are congruent) the base angles (the angles opposite to the two congruent sides) are also congruent. One should also know, that in an isosceles triangle, like in any triangle, the sum of the measures of the angles equals 180 degrees.

Using this we can say that

m<D = m<F

To keep it simple while solving the problem, let's say that they have a value of x degrees.

So,

m<E + m<D + m<F =180

Subsitute

22 + x + x = 180

Simplify and inverse operations

22 + x + x = 180

-22 -22

2x = 158

/2 /2

x = 79

So the measure of <D and <F is 79 degrees.

Gala2k [10]3 years ago

6 0

Answer:

Step-by-step explanation:

An acute triangle adds up to 180

subtract 22 from 180

180-22 = 158

divide by 2

158/2 = 79

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Step-by-step explanation:

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2 years ago

Read 2 more answers

Find the area of the composite figure.

larisa86 [58]

Find the area of all the separate figures and add them together
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3 years ago

Use a system of equations to solve this problem.Bronze is a mix, or alloy, of tin and copper. A metal worker needs 100 g of bron

d1i1m1o1n [39]

Answer:

x = 50 grs

y = 50 grs

Step-by-step explanation:

" x " is quantity of bronze of 5% tin

" y " is quantity of bronze of 45% tin

The worker needs 100 grs of bronze and this bronze must be 25% tin

The mathematical expression for the 100 grs condition is:

x + y = 100

And the The mathematical expression for the % condition is:

0,05*x + 0.45*y = 0,25 * ( x + y )

The system is:

x + y = 100

0,05*x + 0,45*y = 0,25* ( x + y )

Solving this system we get values of x and y

y = 100 - x

0,05*x + 0,45* ( 100 - x ) = 0,25 * ( x + 100 - x )

0,05*x + 45 - 0,45*x = 0,25*( 100 )

0,05*x + 45 - 0,45*x = 25

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and y = 50 grs

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2 years ago

Help ASAP Please

aleksklad [387]

The probability that a student uses the Internet, given that he or she is in eighth grade is 8/13 or 0.66

<u>Step-by-step explanation:</u>

<u>From the table shown:</u>

The students in the eighth grade = 13
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P(student uses the Internet in eighth grade) = P(eighth grade students using internet) / P(total students in the eighth grade)

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3 years ago

True or false: Two lines with undefined slopes are parallel to each other and parallel to the y axis

BlackZzzverrR [31]

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$\frac{y_{1}- y_{2} }{x_{1}- x_{2} }$

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Hope that helps sorry if its a bit confusing :)

5 0

2 years ago