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4 years ago

Plz I need the answer to number 2 rewrite in on standard form with all steps I need this ASAP somebody answer!!!!!!!!!! I BEG U

Mathematics

1 answer:

rosijanka [135]4 years ago

3 0

Answer:

8 -7/16 y+4/5 p - 3/8 y

-7/16 y -3/8 y expand fraction so it would turn to

-7y/16-3y/8

multiply by 2 on the 3/8 to get a common demominator

-7y/16-6y/16

-7y-6y/16

collect like terms

-13y/16

rewrite fraction

- 13/16y

so the whole equation would turn into

8-13/16y+4/5p

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During the cold winter months, a sheet of ice covers a lake near the arctic circle. At the beginning of spring, the ice starts t

Digiron [165]

Answer: 1.5 meters.

Step-by-step explanation:

Given: At the beginning of spring, the ice starts to melt.

The variable s models the ice sheets thickness in meters t weeks after the beginning of spring.

$s=-0.25t+4$

At t=0, s=4 meters

At t=1, s=3.75 meters

∴It is a linear equation, where the rate of change in thickness = 3.75-4=0.25 meter per minute .

The decrease in ice sheet in every 6 weeks = $6\times\text{rate of decrease}=6\times0.25=1.5\ meters$

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3 years ago

What is 5 x 2/3 A) 3 1/3 B) 3 2/5 C) 5 2/3 D) 10/15

Svet_ta [14]

C a the right answer

6 0

3 years ago

Read 2 more answers

Can you answer this please it is homework

Mariulka [41]

I think so that both are b

<h2>I HOPE THIS HELPS</h2>

3 0

3 years ago

Daca a + b = 20 si b + c = 30 ,calculati 3 . a + 7 . b + 4 . c ( Dau coroana la cine ma ajuta )

Oduvanchick [21]

It is given that

a+b=20 -------------------- (1)

b+c=30 -----------------------(2)

We have to calculate

3 a + 4 b +7 c

Now multiplying equation(1 )by 3,we get

3 a+ 3 b=60 ----------------------------------(3)

and Multiplying equation( 2) by 4,we get

4 b + 4 c=120 -----------------------------------(4)

Adding expression (3) and (4),we get i.e left hand side of 3 to left hand side of 4 and right hand side of 3 to right hand side of 4.

3 a+ 3 b+ 4 b+ 4 c=60+120

Adding like terms, we get

3 a+ 7 b+ 4 c =180, Which is the required solution.

4 0

3 years ago

In △ABC acute angles are in the ratio 5:1, i.e. ∠BAC:∠ABC = 5:1. If CH is an altitude and CL is an angle bisector, find m∠HCL.

tekilochka [14]

If $m\angle BAC:m\angle ABC=5:1,$ then $m\angla BAC=(5x)^{\circ},\ m\angle ABC=x^{\circ}.$

The sum of the measures of the interior angles of the triangle is always 180°, then

$m\angle ACB=180^{\circ}-x^{\circ}-(5x)^{\circ}=180^{\circ}-(6x)^{\circ}.$

Since CL is bisector, then

$m\angle BCL=m\angle ACL=\dfrac{180^{\circ}-(6x)^{\circ}}{2}=90^{\circ}-(3x)^{\circ}.$

Consider right triangle ACH. In this triangle

$m\angle ACH=180^{\circ}-90^{\circ}-(5x)^{\circ}=90^{\circ}-(5x)^{\circ}.$

Now angle HCL has measure

$m\angle HCL=m\angle ACL-m\angle ACH=90^{\circ}-(3x)^{\circ}-(90^{\circ}-(5x)^{\circ})=(2x)^{\circ}=2m\angle ABC.$

Answer: $m\angle HCL=2m\angle ABC.$

6 0

4 years ago