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4 years ago

PLZZ HELP ANSWER FIRST YOU GET 22 POINTS AND BRAINLYEST AND THERE IS A PICTURE

Mathematics

2 answers:

Shalnov [3]4 years ago

6 0

Answer: n²+13

Step-by-step explanation: Replace the variable for each expression with -5 until you get the same value for 5n+13 which is -12.

Svetllana [295]4 years ago

4 0

2nd one 5n= -25 and +13 negative 25 is n^2

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True or False 68oz < 4lb 6oz

brilliants [131]

Answer:true!!!

Step-by-step explanation:

6 0

3 years ago

Maths help PLZZ!!!

Slav-nsk [51]

Triangle ABC is an isosceles triangle.

Solution:

Given data:

∠ABC = 70° and ∠ACD = 55°

If two parallel lines are cut by a transversal, then alternate interior angles are congruent.

m∠BAC = m∠ACD

m∠BAC = 55°

Sum of the angles in a straight line add up to 180°.

m∠ACD + m∠ACB + m∠ABC = 180°

55° + m∠ACB + 70° = 180°

m∠ACB + 125° = 180°

Subtract 125° from both sides, we get

m∠ACB = 55°

In triangle ABC,

∠BAC = 55° and ∠ACB = 55°

∠BAC = ∠ACB

Two angles in the triangle are equal.

Therefor triangle ABC is an isosceles triangle.

6 0

3 years ago

One half liter of lemonade concentrate is added to 3 liters of water. how many one thirds liter servings of lemonade are made.

uysha [10]

So, 3 liters of water, add 1/2 liter of lemonade, that's 3 and 1/2 liters of lemonade.

so in short, how many times does 1/3 go into 3 and 1/2?

let's change the mixed to "improper" and divide then.

$\bf \stackrel{mixed}{3\frac{1}{2}}\implies \cfrac{3\cdot 2+1}{2}\implies \stackrel{improper}{\cfrac{7}{2}}\\\\
-------------------------------\\\\
\cfrac{\quad \frac{7}{2}\quad }{\frac{1}{3}}\implies \cfrac{7}{2}\cdot \cfrac{3}{1}\implies \cfrac{21}{2}\implies 10\frac{1}{2}$

8 0

4 years ago

M∠1 = 80 – x; and

Burka [1]

Answer:

$10$

Step-by-step explanation:

m∠2 and m∠1 are congruent by the Corresponding Angles Theorem; we set both expressions equal to each other:

[80 - x]° = [90 - 2x]°

+ x° + x°

______________

80° = [90 - x]°

-90° - 90°

__________

−10° = [−x]°

$10° = x$

I am joyous to assist you anytime.

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3 years ago

Find the area of the figure below. Round to the nearest hundredth when

zalisa [80]

I think its the 3rd one

3 0

3 years ago