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3 years ago

9

Need help asap will give brainly

1 answer:

solong [7]3 years ago

3 0

Answer:

the answer is D

Step-by-step explanation:

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Solve the equation: c - 7 = 12

Alenkinab [10]

c - 7 = 12

or, c = 12+7

or, c = 19

The answer is 19

3 0

3 years ago

A and b are positive integers and 7a+ 5b= 49. Find the values of a and b.

777dan777 [17]

Answer:

B = 49/5 - 7a/5

A = = -5b/7 + 7

Step-by-step explanation:

Given that,

7a+ 5b= 49

Solution:

<em>Solving for a:</em>

Add -5b to both sides:

$7a+5b - 5b=49 - 5b$
$7a = - 5b + 49$

Divide both sides by 7:

$\cfrac{7a}{7} = \cfrac{ - 5b + 49}{7}$
$a = \cfrac{ - 5b}{7} + 7$

Hence,a = -5b/7 + 7.

<em>Solving for b:</em>

Add -7a to both sides:

$7a+5b+( - 7a)=49+(−7a)$
$7a + 5b - 7a = 49 - 7a$
$5b = 49 - 7a$

Divide both sides by 5:

$\cfrac{5b}{5} = \cfrac{49 - 7a}{5}$
$b = \cfrac{49}{5} - \cfrac{7a}{5}$

Hence,b = 49/5 - 7a/5.

4 0

2 years ago

Please help with this

erik [133]

Answer:

C

Step-by-step explanation:

You combine like terms and then order them according to their exponents (order)

Since the 4 has a negative but is going to get subtracted it becomes positive and therefore added

2 $x^5$ +(7x³ + 4x³) - 5x² = 2 $x^5$ + 11x³ - 5x²

5 0

3 years ago

Please help, worth 20+! GIVE ANWERS! PLEASE ANDty

Aneli [31]

$\huge\underbrace\mathtt\blue{∆ᴀɴsᴡᴇʀ∆}$

$1) \: \: \: \frac{34}{100} = 0.34$

$2) \: \: \: \: \frac{23}{50} = \frac{23 \times 2}{50 \times 2} = \frac{46}{100} = 0.46$

$3) \: \: \: \frac{6}{8} = \frac{6 \times 125}{8 \times 125} = \frac{750}{1000} = 0.008$

$4) \: \: \: \frac{1}{3} = 0.3$

(for no. 4 check the image in the attachment)

7 0

3 years ago

A sphere is inscribed in a cube with a volume of 64 cubic inches. What is the volume of the sphere? Round your answer to the nea

Arte-miy333 [17]

Answer:

the volume of the sphere is

$33.51 in^{3}$

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, sphere and cube.

Given data

Volume of cube v = 64 cubic inches

since we are dealing with a cube the height and the radius of the sphere is same as the sides of the cube,

we know that volume of cube is expressed as

$v= l*b*h$

$v=l^{3}$

$64= l^{3}$

$l= \sqrt[3]{64}$

$l= 4 in$

also diameter d=length l

Diameter d= $4in$

Radius r = $\frac{d}{2}$ = $\frac{4}{2}$ = ${2 in}$

Height h= $4in$

we know that the volume of a sphere is given by

$v= \frac{4}{3} \pi r^{3}$

substituting into the formula we have

$v= \frac{4}{3} \ *3.142*2^{3} \\v=\frac{4*3.142*8}3} \\v= \frac{100.54}{3} \\v= 33.52in^{3}$

3 0

3 years ago