3 years ago

Do dis pls and don’t be toxic and take points

1 answer:

6 0

Here you go, it’s simply solving for x. one tip i can give you is that if you divide by a negative number, the inequality sign flips. hope this helps :)

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How many gallons of pure water must be added to 10 gal of 30% salt water to make a solution that is 25% salt water?

dezoksy [38]

Answer:

2 gallons must be added Hope this helps!

6 0

3 years ago

Which of the following options have the same value as 30%, percent of 81? Choose 3 answers:

Mila [183]

30% is a way to express the fraction 30/100 = 3/10

So, 30% of 80 is

$80\cdot \dfrac{3}{10}=8\cdot 3 = 24$

5 0

3 years ago

Find the volume of the triangular pyramid shown below

Greeley [361]

Answer:

Step-by-step explanation:

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3 years ago

Help me please !!!!!!!!!!!!!!

tensa zangetsu [6.8K]

Answer:

$\large\boxed{V=\dfrac{49\pi}{3}\ in^3}\approx51.29\ in^3}$

Step-by-step explanation:

The formula of a volume of a cone:

$V=\dfrac{1}{3}\pi r^2H$

r - radius

H - height

We have

r = (7 : 2) in = 3.5 in

H = 4 in

Substitute:

$V=\dfrac{1}{3}\pi(3.5)^2(4)=\dfrac{1}{3}\pi(12.25)(4)=\dfrac{49\pi}{3}\ in^3$

$\pi\approx3.14\\\\V\approx\dfrac{(49)(3.14)}{3}\approx51.29\ in^3$

5 0

3 years ago

Circle F is congruent to circle J, and ZEFD = ZGJH.<br> m ZDFE = 80'. What is the measure of H?

djyliett [7]

Answer:

50 deg

Step-by-step explanation:

The circles are congruent, so all radii of both circles are congruent.

The given central angles are congruent, so the triangles are congruent by SAS.

Since each triangle has 2 congruent sides (the radii), opposite angles are congruent.

m<DFE = m<J = 80 deg

m<H = m<G = x

m<H + m<G + m<J = 180

x + x + 80 = 180

2x + 80 = 180

2x = 100

x = 50

m<H = 50

6 0

3 years ago

Read 2 more answers