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miskamm [114]
3 years ago
9

Find the LCM of each pair of numbers. 14 and 21

Mathematics
1 answer:
sweet [91]3 years ago
7 0
I believe it's 42 :)
You might be interested in
Simplify 425xy⁴/25xy²
beks73 [17]

We have the expression

\frac{425xy^4}{25xy^2}

We can already simplify x because it's both on the numerator and denominator

\frac{425y^4}{25y^2}

Now we can simplify 425/25 = 17

\frac{17y^4}{y^2}

Remember that

\frac{a^n}{a^m}=a^{n-m}

Then

17y^{4-2}=17y^2

The final result is

17y^2

3 0
2 years ago
1. When two lines cross, the opposite angles are ___________ angles and are congruent. *
schepotkina [342]

Answer:

1. vertical angles

2. Adjacent angles

3. Supplementary angles

Step-by-step explanation:

4 0
2 years ago
If Pete pushes a toy car across the floor, which statement is true according to
Yuki888 [10]

there are no statement s .......

7 0
3 years ago
A line with gradient of -3 passes through the points(3,k) and (k,8). Find the value of k and hence express the equation of the l
Kruka [31]

Answer:

3x + y = 9.5

Step-by-step explanation:

1) The equation of a line is in the form of y = mx + c, where m is the gradient and c is the y-intercept. Write the given values in that form.

y = -3x + c

2) Find the value of k by using the following formula: m = y2 - y1 / x2 - x1. We already know m.

-3 = 8 - k / k - 3

-3(k - 3) = 8 - k

-3k + 9 = 8 - k

-3k + k = 8 - 9

-2k = -1

k = -1/-2

k = 1/2

3) Therefore, a line with gradient of - 3 passes through the points (3, 1/2) and (1/2, 8). We can find the y-intercept (c). To do so, choose one of the coordinates and substitute.

y = -3x + c

1/2 = -3(3) + c

1/2 = -9 + c

1/2 + 9 = c

9.5 = c

Completed equation of the line: y = -3x + 9.5

4) Write it in the form of ax + by = c.

3x + y = 9.5

8 0
2 years ago
Assuming that the families use the same appliances in the same way, who spends more to run these appliances in a given 30 day pe
svetoff [14.1K]

The family who spends more to run these appliances in a given 30 day period is given by: Option A: The reed family spends $13.80 more than the merrill family.

<h3>How to interpret integral multiplication?</h3>

Suppose that there are two positive integer numbers( numbers like 1,2,3,.. ) as a and b

Then, their multiplication can be interpreted as:

a \times b = a + a + ... + a \: \text{(b times)}\\\\a \times b = b + b +... + b \: \text{(a times)}

For example,

5 \times 2 = 10 = 2 + 2 + 2 + 2 + 2 \: \text{(Added 2 five times)}\\or\\5 \times 2 = 10 = 5 + 5 \: \text{(Added 5 two times)}

For this case, the missing table for expenses of both families is:

Reed Family                                                   Appliances                

Gas range                                                  5 cents per day            

Gas dryer                                                   1 load per day-10 cents per load

Electric water heater                                90 cents per day

Typical later model refrigerator               16 cents per day

Total cost per day                                      5+10+90+16= 166 cents = $1.21

Merrill Family                                                Appliances

Electric range                                            13 cents per day

Gas dryer -                                                 1 load per day 10 cents per load

Gas water heater                                      40 cents per day

Energy Star-labeled refrigerator              12 cents per day

Total cost per day                                    13+10+40+12 = 75 cents = $0.75

Since each of them used these appliances for 30 days, so we get:

  • Case 1: Expense by Reed Family in 30 days:

Expense in 30 days = 30 \times expense per day

Expense in 30 days = 30 \times 1.21 = \$36.3

  • Case 2: Expense by Merrill Family in 30 days:

Expense in 30 days = 30 \times expense per day

Expense in 30 days = 30 \times 0.75 = \$22.5

So, Reed family spent more.

The difference is $36.3 - $22.5 = $13.80

Thus, the family who spends more to run these appliances in a given 30 day period is given by: Option A: The reed family spends $13.80 more than the merrill family.

Learn more about multiplication here:

brainly.com/question/26816519

8 0
2 years ago
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