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3 years ago

A student says the sum,difference,product, and quotient of two integers are always integers. do you agree? explain .

1 answer:

6 0

The student is not entirely correct. If the student said "the sum, difference, and product of two integers are always integers", then they would be fully correct. I left out "quotient".

Dividing two integers doesn't always lead to an integer result. For example, 10/7 = 1.43 approximately.

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A store sells ½ pound of beef for $0.70. If you are having a party and need 6 pounds of beef for hamburgers, using the unit rate

RideAnS [48]

Answer:

$8.40

Step-by-step explanation:

A store sells ½ pound of beef for $0.70

We find the unit rate

1/2 pound = $0.70

1 pound =

We cross Multiply

1/2 × x = 1× 0.70

x = 0.70 ÷ 1/2

x = 0.70 × 2/1

x = $1.40

The unit rate for 1 pound of beef is $1.40

If you are having a party and need 6 pounds of beef for hamburgers

Hence, the cost for 6 pounds of beef is:

1 pound = $1.40

6 pounds = y

y = 6 × $1.40

y = $8.40

6 pounds of beef for hamburgers would cost $8.40

3 0

3 years ago

Eitan randomly selected volcanoes to travel to and study. After traveling, he had seen 13 cinder cone volcanoes, 18 shield volca

snow_lady [41]

Answer: Probability of getting one volcano in the world on which to conduct an extensive study is $\frac{1}{37}$

Step-by-step explanation:

Since we have given that

Number of cinder cone volcanoes = 13

Number of shield volcanoes = 18

Number of stratovolcanoes = 6

Total number of volcanoes is given by

$13+18+6\\\\=37$

So, Probability of selecting one volcano in the world on which to conduct an extensive study is given by

$\frac{\text{Number of favourable outcomes}}{\text{Total number of outcomes}}\\\\=\frac{1}{37}$

Hence, Probability of getting one volcano in the world on which to conduct an extensive study is $\frac{1}{37}$

6 0

3 years ago

Read 2 more answers

water goes over Niagara Falls at the rate of 180 million cubic feet every 1/2 hour. how much water goes over the Falls in 1 minu

Papessa [141]

Answer:

6×10⁶ cubic feet

30:1

Step-by-step explanation:

Water goes over Niagara Falls at a rate of 180 million cubic feet every $\frac{1}{2}$ hours.

Now, 180 million cubic feet ≡ 18×10⁷ cubic feet

and $\frac{1}{2}$ hours =30 minutes.

As the water is falling at a constant rate, hence, the unitary method of calculation can be applied.

Therefore, in 1 minute, the amount of water that goes over the falls will be

18×10⁷/30 =6×10⁶ cubic feet.

So, the amount of water passing over the falls is reduced in the ratio 30:1. (Answer)

7 0

3 years ago

I need 10x+3y=19 and y=2x+5 solved algebraically

taurus [48]

Y=2x+5
sub 2x+5 for y in other equaiton
10x+3(2x+5)=19
distribute
10x+6x+15=19
minus 15 from both sides
16x=4
divide both sides by 16
x=1/4
sub back

y=2x+5
y=2(1/4)+5
y=1/2+5
y=5.5=11/2

solution is (1/4,11/2) or in decimal, (0.25,5.5)

8 0

3 years ago

Please help with this question!!!

Scilla [17]

Answer:

t = 3 ± √ 9 − 4 d

over

4 0

3 years ago