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3 years ago

What is the product of (-1/4) x (-3/7)? * please show work

2 answers:

6 0

Answer: 3/28

Step by Step Explanation:
To solve this equation, we do NOT need the same denominator.
And since both fractions are negative, we know the answer is going to be positive.
So we just multiply normally.

-1/4 • -3/7

We cannot cross cancel anything, so we just multiply across.

-1 • -3 = 3
-4 • -7 = 28

So our answer is 3/28.

Hope this helps! :3

Shkiper50 [21]3 years ago

4 0

(-1/4) x (-3/7)

= (-1 x -3)/4 x 7

= 3/28

3/28 is the answer.

Hope it helps:)

Please mark me as the Brainliest.

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Write an equation in slope-intercept form of the line having the given slope and y-intercept.

DIA [1.3K]

Y=-25x-6 The slope-intercept form is Y=mx+b

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3 years ago

What is the sum of a geometric series Sn=a+ar+ar2+ar3+…+arn-2+arn-1?

algol13

Answer:

$Sn= \frac{a(1-r^n)}{1-r}$

Step-by-step explanation:

A geometric sequence is a sequence such that any element after the first is obtained by multiplying the preceding element by a constant called the common ratio which is denoted by r. The common ratio (r) is obtained by dividing any term by the preceding term.

from the given expression

the given data are

first term a1= $a$

second term a2= $ar$

third term a3= $ar^2$

the common ratio is expressed as $r=\frac{a2}{a1}$ = $\frac{ar}{a} = r$

Sum of Terms in a Geometric Progression

Finding the sum of terms in a geometric progression is easily obtained by applying the formulas:

$Sn= \frac{a1(1-r^n)}{1-r}$

nth partial sum of a geometric sequence substituting the values of a1=a and the common ratio= r we have

$Sn= \frac{a(1-r^n)}{1-r}$

4 0

3 years ago

By estimating the line of best fit which value is the best estimate for how many cars will be sold tomorrow

Tasya [4]

Answer: 30

Step-by-step explanation: when you look at the x value of 9, the y value on the best fit line would be 30

7 0

3 years ago

Read 2 more answers

180 people walked in a store. Every 25th person got a free T-shirt. What’s the total number of people who received a t-shirt?

katrin2010 [14]

Answer:

the correct answer is 7

....... hope it helps you

7 0

3 years ago

I need help with these questions

inysia [295]

Answer:

28. m<A=20°, m<B=70°

32. m<A=103°, m<B=77°

Step-by-step explanation:

complementary angle=a+b=90°

supplementary angle=a+b=180°

28. A+B=90°

5x+17x+2=90°

22x+2=90°

22x=90-2

22x=88

22x/22=88/22

x=88/22=4

m<A=5x=5*4=20°

m<B=17x+2=17*4+2=68+2=70°

Check

A+B=90°

20+70=90°

90°=90°

32. A+B=180°

x+11+x-15=180°

2x-4=180°

2x=180+4

2x=184

2x/2=184/2

x=184/2

x=92

m<A=x+11=92+11=103°

m<B=x-15=92-15=77°

Check

A+B=180°

103+77=180°

180°=180°

6 0

3 years ago