All categories

3 years ago

Can someone please help me with b and C questions

Mathematics

1 answer:

andre [41]3 years ago

6 0

Answer:

(b) 33919

Step-by-step explanation:

⇒ 317 × 107 = (300 + 10 + 7)(100 + 7)

= 300(100 + 7) + 10(100 + 7) + 7(100 + 7)

= 30000 + 2100 + 1000 + 70 + 700 + 49

= 30000 + 2000 + 100 + 1000 + 70 + 700 + 40 + 9

= 30000 + 2000 + 1000+ 700 + 100 + 70 + 40 + 9

= 30000 + 3000 + 800 + 110 + 9

= 30000 + 3000 + 800 + 100 + 10 + 9

= 30000 + 3000 + 900 + 10 + 9

= 33919

$\begin{aligned} 5\frac{2}{3}+3\frac{1}{2}-\frac{5}{6}&=\dfrac{5 \times3+2}{3}+\dfrac{3 \times 2+1}{2}-\dfrac{5}{6}\\\\&=\dfrac{17}{3}+\dfrac{7}{2}-\dfrac{5}{6}\\\\& =\dfrac{17 \times 2}{3\times 2}+\dfrac{7\times 3}{2\times 3}-\dfrac{5}{6}\\\\ & = \dfrac{34}{6}+\dfrac{21}{6}-\dfrac{5}{6}\\\\ & = \dfrac{34+21-5}{6}\\\\ & = \dfrac{50}{6}\\\\&=8\frac{1}{3}\end{aligned}$

You might be interested in

Denise collects stuffed animals. The number of stuffed animals in her collection, a, after n, number of years, can be described

natka813 [3]

I think the answer would be A

5 0

3 years ago

The formula to convert °C to °F is:

PolarNik [594]

Answer:

80.6

Step-by-step explanation:

F = 9/5 C + 32

F = (9/5)*27 + 32 Substitute 27 into the equation

F = 243 / 5 + 32 Multiply 9 and 27 together

F = 48.6 + 32 Divide by 5

F = 80.6 Add on 32

A very quick way to do this is to double your centigrade temperature and and 30 which you should be able to do in your head.

2*27 = 54 Add 30

54 + 30 = 84

This quick way will tell you if you get near the right answer.

3 0

3 years ago

I need help asap please i will mark you brainlist

mash [69]

Answer: B

Step-by-step explanation:

If an absolute value of a negative number plus a absolute value of the positive number is positive. Absolute value of anything is positive.

3 0

3 years ago

Goblin Gryh can count the coins in a bag in 10 minutes. If goblin Girt counts with him, they can count all the coins in 6 minute

TiliK225 [7]

The Goblin Girt take 15 minutes to count the coins in the bag alone if Goblin Gryh can count the coins in a bag in 10 minutes. If goblin Girt counts with him, they can count all the coins in 6 minutes.

<h3>What is a fraction?</h3>

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

Let's suppose the Goblin Girt take x minutes to count the coins in the bag alone.

Then we can frame an equation to find the value of x:

$\rm \dfrac{1}{x}+\dfrac{1}{10}=\dfrac{1}{6}$

$\rm \dfrac{1}{x}=- \dfrac{1}{10}+\dfrac{1}{6}$

$\rm \dfrac{1}{x}=\dfrac{1}{15}$

x = 15 minutes (reciprocal on both sides)

Thus, the Goblin Girt take 15 minutes to count the coins in the bag alone if Goblin Gryh can count the coins in a bag in 10 minutes. If goblin Girt counts with him, they can count all the coins in 6 minutes.

Learn more about the fraction here:

brainly.com/question/1301963

#SPJ1

4 0

2 years ago

I need to solve x-y=2 and x+y=-6

Fynjy0 [20]

Answer:

There isn't an answer for it because there is a variable

5 0

3 years ago

Read 2 more answers

Can someone please help me with b and C questions ​

Can someone please help me with b and C questions