All categories

2 years ago

Write an expression that can be used to multiply 6x198 mentally

2 answers:

5 0

You could multiply
6 times 100

then 6 times 90 or 6 times 9 then add zero

and finally 6 times 8

then add them all together

i don't think its what you want but this is what i would do. mentally

Vilka [71]2 years ago

4 0

6×100+6×90+6×8 I think that is the answer

You might be interested in

A chemist has two alloys, one of which is 5% gold and 20% lead and the other which is 30% gold and 50% lead. How many grams of e

dmitriy555 [2]

The amount of the first alloy is 450 grams and the amount of the second alloy is 30 grams.

<h3>What is a linear equation?</h3>

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have:

A chemist has two alloys, one of which is 5% gold and 20% lead and the other which is 30% gold and 50% lead.

Let's suppose the x is the amount of the first alloy and y is the amount of the second alloy:

We can make two linear equation in two variables:

0.05x + 0.3y = 31.5 ...(1)

0.2x + 0.5y = 105 ...(2)

After solving the above two linear equations by substitution method, we get:

x = 450 grams

y = 30 grams

Thus, the amount of the first alloy is 450 grams and the amount of the second alloy is 30 grams.

Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ1

3 0

1 year ago

Select all the common denominators for 8/3 and 5/6 .......12, 24, 32, 36, 48

BabaBlast [244]

Hello.

The answer to your question is =
12, 3 x 4 and 6 x 2.
24, 3 x 8 and 6 x 4.
36, 3 x 12 and 6 x 6.
48, 3 x 16 and 6 x 8.

So it's pretty much everything except for 32.
Have a great day!

6 0

3 years ago

Read 2 more answers

Apples are sold in bags of four that cost $5, or bags of six that costs $7 per bag. What is the smallest cost at which you can b

babunello [35]

STEP 1:
BAGS OF FOUR
find number of bags needed to total 74 apples

= 74 ÷ 4 apples/bag
= 18.5 bags

*must round up to 19 bags because we cannot buy a partial bag

STEP 2:
BAGS OF FOUR
calculate price of 19 bags of 4 apples per bag

= 19 bags * $5/bag
= $95 for 19 bags of 4 apples/bag

STEP 3:
BAGS OF SIX
find number of bags needed to total 74 apples

= 74 ÷ 6 apples per bag
= 12.3333 bags needed

*must round up to 13 bags because we cannot buy a partial bag

STEP 4:
BAGS OF SIX

calculate price of 13 bags of 6 apples per bag

= 13 bags * $7 per bag
= $91 for 13 bags of 6 apples/bag

ANSWER: The smallest cost to buy 74 apples is $91.

Hope this helps! :)

3 0

2 years ago

If the volume of the figure below is 4,069.44ft3 find the missing dimension

olga_2 [115]

Answer:

x = 9 ft

Step-by-step explanation:

The volume of a cylinder is given by

V = pi r^2 h

We know the radius is x

4069.44 = pi x^2 16

Divide each side by 16 pi

4069.44 / 16 pi = x^2

Using 3.14 for pi

81 = x^2

Take the square root of each side

sqrt(81) = sqrt(x^2)

x = 9

3 0

2 years ago

2,6,12,20 Generalize the pattern by finding the nth term. A) 2n B) n2 + n C) 3n - 1 D) (n + 1)(n + 2)

Anna007 [38]

Position Value of Term. 1. 4. 2. 8. 3. 12. 4. 16. 5. 20. What expression shows the ... 1 1. 2 -5. 3 1. 4 -5. 5 1. B). n an. 1 2. 2 8. 3 14. 4 20. 5 26. C). n an. 1 2. 2 -2. 3 -10. 4 -26 ... Generalizethe pattern by finding an explicit formula for the nth term. A) n2 + 5. B). 3n + 1. C). 2n + 5. D). (n + 1)

5 0

2 years ago