SOMEONE HELP WITH THIS PLZZ!!

Mathematics

1 answer:

Natali5045456 [20]2 years ago

3 0

Answer:

x=90 y=45

Step-by-step explanation:

Answer is C

y and 45 are vertical angles

x=90 (right angle)

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What is times positive 9 times negative 5

Ber [7]

Negative 45 or -45 because different signs with multiplication are always negative

5 0

3 years ago

(easy) If ΔEFG ~ ΔLMN with a ratio of 3:1, which of the following is true?

alexandr402 [8]

Answer:

segment EG over segment LN equals segment FG over segment MN

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its corresponding sides is proportional and its corresponding angles are congruent

In this problem

The corresponding sides are

EF and LM

EG and LN

FG and MN

The corresponding angles are

∠E≅∠L

∠F≅∠M

∠G≅∠N

therefore

EF/LM=EG/LN=FG/MN=3/1

7 0

3 years ago

Read 2 more answers

PLEASE help with these questions??<br> there are 7 of them!<br> Thank you!!

svetlana [45]

We know in these kind of triangles that have a 90 degrees angle, we can do:

${a}^{2} + {b}^{2} = {c}^{2}$

so the first question:

$\sqrt{ {99}^{2} + {20}^{2} } = 101$

and then:

$b = \sqrt{ {17}^{2} - {15}^{2} } = 8$

so , when you want to rationalize , usually you must multiply the irrational factor as 1:

$\frac{ \sqrt{15} }{ \sqrt{15} } = 1$

so , now multiply:

$\frac{3}{ \sqrt{15} } \times \frac{ \sqrt{15} }{ \sqrt{15} } = \frac{3 \sqrt{15} }{15} = \frac{ \sqrt{15} }{5}$

in the next question,we know negative numbers in radical don't have any solution so 2 is correct,