2 years ago

HELP ME!!!!!!!!!!!

Mathematics

2 answers:

Naddika [18.5K]2 years ago

6 0

The volume of the other side would be 390mm 3 as well

Natalka [10]2 years ago

5 0

Answer:

390 they are the same thing

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Use signed numbers to solve. A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. What was the net gain

DENIUS [597]

B. Lost 850 ft
800-450= 350
1200-350=850

I hope I helped :D

6 0

2 years ago

A rectangle has a width of 9 cm, and a diagonal of 15 cm. Find the length.

iren2701 [21]

The answer is
$9 { + 15 {}^{2} }^{= \sqrt{108}$

6 0

2 years ago

A room contains three urns: u1, u2, u3. u1 contains 3 red and 2 yellow marbles. u2 contains 3 red and 7 yellow marbles. u3 conta

Archy [21]

Answer:

$\dfrac{11}{30}$

Step-by-step explanation:

Urn U1: 3 red and 2 yellow marbles, in total 5 marbles.

The probability to select red marble is $\dfrac{3}{5}=0.6.$

Urn U2: 3 red and 7 yellow marbles, in total 10 marbles.

The probability to select red marble is $\dfrac{3}{10}=0.3.$

Urn U1: 1 red and 4 yellow marbles, in total 5 marbles.

The probability to select red marble is $\dfrac{1}{5}=0.2.$

The probability to choose each urn is the same and is equal to $\frac{1}{3}.$

Thus, the probability that the marble is red is

$\dfrac{1}{3}\cdot 0.6+\dfrac{1}{3}\cdot 0.3+\dfrac{1}{3}\cdot 0.2=\dfrac{1.1}{3}=\dfrac{11}{30}.$

4 0

2 years ago

Sonu's grandmother is 80 years old and Sonu is 20 years old. how many years ago was his grandmother 7 times as old as Son? (line

Aleks [24]

Answer:

10 years ago

Step-by-step explanation:

Let x be the number of years ago

x years ago,

Sonu's grandmother was 80 - x

Sonu was 20 - x

x years ago,

the grandmother was 7 times as old as Sonu

80 - x = 7(20 - x)

80 - x = 140 - 7x

6x = 60

x = 10

6 0

2 years ago

Can someone help me with these 2. Will Mark brainliest.

hammer [34]

Answer:

number 5 answer is y=2x+5

number 6 answer is y=-1/3x-6

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers