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3 years ago

Pleaseee help me to solve this

Mathematics

1 answer:

uysha [10]3 years ago

4 0

Answer:

- 4 (3y - 10) - y = - 2 (y - 5 )

y = 2 8/11

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Find the value of y.

Leno4ka [110]

Answer:

$\sqrt{55}$

Step-by-step explanation:

Based off of what we do know, if we can find length DB we can use the pythagorous theorem (I will be assigning the variable z)

$x^{2} =36+z^{2} \\\\y^{2}=25+z^2\\\\x^{2} +y^2=121\\\\$

First equation is for triangle ABD

Second is for BCD

And the last one is for ACD

Substitute $x^{2}$ and $y^2$

$36+z^2+25+z^2=121\\\\61+2z^2=121\\\\2z^2=60\\\\z^2=30\\\\z=\sqrt{30}$

As discovered before

$y^2=25+z^2\\\\y^2=25+30\\\\y^2=55\\\\y=\sqrt{55}$

8 0

3 years ago

In each diagram, line k is parallel to line l, and line t intersects line k and l.

viva [34]

Answer:

D) the value of x is 135, because the angles shown in each diagram are complementary

Step-by-step explanation:

Each diagram has 2 angles labeled, and those two angles are always supplementary. The sum of the measures of two supplementary angles is 180°.

x + 45 = 180

x = 180 - 45

x = 135

Answer: D) the value of x is 135, because the angles shown in each diagram are complementary

4 0

3 years ago

A bag of 4 balls weighs 6 pounds. Each ball weighs the same amount. What is the weight of each ball?

earnstyle [38]

6/4 = 1.5
Answer: 1.5 pounds

8 0

3 years ago

If x=15 and y=45, what is the value of x if y=57

Ierofanga [76]

Answer:

x = 15

y = 45

y =45 --- 15 = x

y = 57 ---- ?

57 × 15 / 45

57/3

7 0

3 years ago

What does 12^2 equal

Leno4ka [110]

Answer:

144

Step-by-step explanation:

12^2=12*12=144

5 0

4 years ago