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1 year ago

3a-28-7a+10a Someone PLEASE HELP

Mathematics

2 answers:

tiny-mole [99]1 year ago

8 0

Answer:

6a - 28

Step-by-step explanation:

combine like terms

3a - 28 - 7a + 10a

3a - 7a + 10a = 6a

have a lovely day :)

dimaraw [331]1 year ago

8 0

Answer:

Step-by-step explanation:

the steps are on the pic

symbolab

tiger-algebra

and

geteasysolution

aregoof for math

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Please help me thank youuuuuu

xenn [34]

First, find the arc measure BD. The arc measure is twice the central angle measure. BD should be 48*2 = 96.

The chord BC looks like it’s the diameter of the circle, so it must have a measure of 180.

From here you can find DC. The total measure of a circle is 360.
360- 96-180 = 84, so DC is 84.

DBC is 360- DC
so 360- 84 = 276.

DCB is just 360- BD
so 360- 96 = 264.
Hope this helps!

8 0

3 years ago

The figures below are based on semicircles and squares. Find the perimeter and the area of each shape. Give your answer as a com

irina1246 [14]

Answer:

Part 1) The area of the figure is $A=48\ cm^2$

Part 2) The perimeter of the figure is $P=4(2+3\pi)\ cm$

Step-by-step explanation:

Part 1) Find the area of the figure

we know that

The area of the figure is equal to the area of three squares

$A=3[4^2]=48\ cm^2$

Part 2) Find the perimeter of the figure

we know that

The perimeter of the figure is equal to two times the length side of the square, plus the circumference of six semicircles ( or the circumference of three circles)

Remember that

The circumference of a circle is equal to

$C=\pi D$

where

D is the diameter of the circle

In this problem

$D=4\ cm$

$P=2(4)+3[\pi(4)]=(8+12\pi)\ cm$

simplify

$P=4(2+3\pi)\ cm$

8 0

2 years ago

A family of 8 people is entitled to a ratio of 6400 grams of sugar. What will be the sugar ratio for a family of 10 people?

ryzh [129]

6400/8=800, this leaves 800g of sugar per person.
800*10= 8000
So this family is entitled to 8000g of sugar

7 0

2 years ago

Read 2 more answers

50 PTS<br> Please Make sure its easy to understand

kkurt [141]

Answer:

1) -95.

2) 15.

3) The conference center is on floor 5.

Step-by-step explanation:

1) Evaluating gives $-52-30-13=-(52+30+13)=-(95)=-95.$

2) Substituting gives $x+27=(-12)+27=15.$

3) After going 4 floors down, we are on level -4. After going 9 floors up to the desired room, we are on level -4+9=5. So the conference center is on floor 5.

3 0

3 years ago

Read 2 more answers

Which point on the number line represents the product of 4 and -2.

Iteru [2.4K]

Answer:

A: -8

Step-by-step explanation:

4 * -2 is -8, and A is on that point.

8 0

2 years ago