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2 years ago

Ez pls help i will give extra points

Mathematics

1 answer:

My name is Ann [436]2 years ago

7 0

Answer:

25.4

Step-by-step explanation:

1/3 ( 2.55+.75) +3* 8.1

Using pemdas, parentheses first

1/3 ( 3.3) +3* 8.1

Then multiply

1.1 + 24.3

Then add

25.4

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Tre'Quan reads at a constant rate that lets him complete 4 chapters each week. He starts reading a book with 42 chapters. Which

Tju [1.3M]

Answer:

y=42− 4/7 x

Step-by-step explanation:

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2 years ago

Simplify the expression 2(x-6)+2(8)

jolli1 [7]

Answer:

2x+4

Step-by-step explanation:

Distribute:

=(2)(x)+(2)(−6)+(2)(8)

=2x+−12+16

Combine Like Terms:

=2x+−12+16

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2 years ago

These triangles are similar. find Y and X

CaHeK987 [17]

It these triangles are similar, then the sides of the triangles are in proportion:

$\dfrac{y}{10}=\dfrac{y+4}{15}$ cross multiply

$15y=10(y+4)$ use distributive property

$15y=10y+40$ subtract 10y from both sides

$5y=40$ divide both sides by 5

$\boxed{y=8}$

$\dfrac{x}{4}=\dfrac{6}{8}$ cross multiply

$8x=(4)(6)$

$8x=24$ divide both sides by 8

$\boxed{x=3}$

3 0

3 years ago

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ElenaW [278]

Answer:

only the second one

Step-by-step explanation:

a dilation makes the shape bigger or smaller which makes it not congruent

3 0

2 years ago

Select the correct answer from each drop-down menu. The base of pyramid A is a rectangle with a length of 10 meters and a width

ASHA 777 [7]

Step-by-step explanation:

The formula of a volume of a pyramid:

$V=\dfrac{1}{3}BH$

B - base area

H - height

H - height of pyramids

Pyramid A:

$B=(10)(2)=200\ m^2$

$V_A=\dfrac{1}{3}(200)H=\dfrac{200}{3}H\ m^3$

Pyramid B:

$B=10^2=100\ m^2$

$V_B=\dfraC{1}{3}(100)H=\dfrac{100}{3}H\ m^3$

$V_A>V_B\\\\V_A=2V_B$

The volume of the pyramid A is twice as large as the volume of the pyramid B.

The new height of pyramid B: 2H

The new volume:

$V_{B'}=\dfrac{1}{3}(100)(2H)=\dfrac{200}{3}H\ m^3$

The volume of the pyramid A is equal to the volume of the pyramid B.

3 0

3 years ago