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3 years ago

How do I multiply 6.8x1.5?

Mathematics

2 answers:

Licemer1 [7]3 years ago

8 0

Your answer will be 10.2

agasfer [191]3 years ago

7 0

Use a calculator. and ur answer is going to be 10.2

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Ms.Cornick bought 6 new pens for $5.70. How much would it cost her to buy 11 pens at the same rate?

UNO [17]

Answer:

about 11.50

Step-by-step explanation:

6 / 5.70 = 1.05

1.05 x 11

hope this helps

5 0

3 years ago

What is the simplified form of the following expression? 2√27+√12-3√3-2√12

LiRa [457]

Answer:

√3

Step-by-step explanation:

The given expression to be simplified is

$2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}$

but

$2 \sqrt{27}=2\sqrt{9 \times 3}=2 \times \sqrt{9}\times \sqrt{3}=2 \times 3 \times\sqrt{3}=6 \sqrt{3}$

$\sqrt{12}=\sqrt{4\times3}= \sqrt{4}\times \sqrt{3}=2\sqrt{3}$

Since √12=2√3,this implies that,

$2\sqrt{12}=2\times2\sqrt{3}=4 \sqrt{3}$

Therefore,

$2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}=6\sqrt{3}+2\sqrt{3}-3 \sqrt{3} -4\sqrt{3}$

$=(6+2-3-4)\sqrt{3}$

$=\sqrt{3}$

The simplified form of ,

$2 \sqrt{27}+\sqrt{12}-3\sqrt{3}-2 \sqrt{12}$ is √3

8 0

3 years ago

Celina can walk 4 miles in 1 hour and can run 8 miles in 1 hour. What percent of Celina’s average running speed is her average w

Valentin [98]

Okay. So, we're looking for the percentage of Celina's running speed as her walking speed. Her running sped is 8 mph and her walking speed is 4mph. All we have to do is 4/8 = x/100. You put change/original and x/100, because we're looking for the percent of change from running speed to walking speed. Cross multiply the values to get 400 = 8x. Divide each side by 8 to isolate the "x". 400/8 is 50. x = 50. Celina's walking speed is 50% of her running speed. The answer is B: 50%.

5 0

4 years ago

Paolo was asked to find the original dimension of an enlarged pentagon. His solution is shown next to the pentagons. A small pen

seropon [69]

Answer:

Paolo made an error when he cross multiplied the proportion

Step-by-step explanation:

The proportion is ...

$\dfrac{3}{12}=\dfrac{x}{8}$