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4 years ago

IF RIGHT ILL GIVE BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics

2 answers:

Minchanka [31]4 years ago

7 0

Answer:

-12, 15

Step-by-step explanation:

(3(-4), 3(5))

-12, 15 if you multiply correctly

SVEN [57.7K]4 years ago

7 0

Answer:

(-12,15)

Step-by-step explanation:

i got it right on my test and i am pretty sure you will too.

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A grocery store sells a bag of 6 oranges for $4.20. If Ayden spent $2.80 on oranges, how many did he buy?

aleksley [76]

Answer:

4 oranges.

Step-by-step explanation:

First, you find the unit rate of cost per orange, which is $0.70, then divide that by $2.80.

5 0

4 years ago

Write 129.701 in expanded form

tester [92]

100+20+9+0.7+0.00+0.001
or-
100+20+9+0.7+0.001
(#2 is more accurate

6 0

4 years ago

Read 2 more answers

A grain silo is approximately 85% full. A 55 lb sack of grain measures 2 cubic feet.

erastova [34]

Answer:

Option A . 1708 bags

Step-by-step explanation:

The picture of the question in the attached figure

step 1

Find the volume of the silo

The volume of the silo is equal to the volume of a cylinder plus the volume of a cone

$V=\pi r^{2}h_1+\frac{1}{3}\pi r^{2}h_2$

we have

$\pi =3.14$

$r=16/2=8\ ft$ ---> the radius is half the diameter

$h_1=16\ ft$

$h_2=12\ ft$

substitute

$V=(3.14)(8)^{2}(16)+\frac{1}{3}(3.14)(8)^{2}(12)$

$V=3,215.36+803.84=4,019.2\ ft^3$

Remember that

The silo is approximately 85% full

The volume of grain in the silo is

$0.85(4,019.2)=3,416.32\ ft^3$

step 2

Find the number of bags of grain

Divide the volume of grain in the silo by the volume of one sack

$3,416.32/2=1,708\ bags$

7 0

3 years ago

If 12x +1 =-7, what’s is the value of x over 8

Sergio [31]

12x+1=-7
-1 -1
12x=-6
/12 /12

x=-1/2 or x=-0.5

8 0

3 years ago

Given the following equation x2 + 4x = 21 find the solutions. (Show All Work)

NeTakaya

Step-by-step explanation:

15a)

$x^2+4x=21$ Subtract both sides by 21

$x^2+4x-21 =0$

15b)

7 and -3 multiply to -21 and add to 4

The factors are (x+7)(x-3)

15c)

x+7 =0

x=-7

x-3=0

x=3

7 0

3 years ago