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Masteriza [31]
3 years ago
12

A total of 6 family members will appear in a portrait. If 4 of the family members may sit in the front row, how many combination

s of family members may sit in the front row? A.24 B.12 C.18 D.15
Mathematics
1 answer:
garik1379 [7]3 years ago
7 0
The order of the persons seated in front is not important so long as there are four of them. The combination of the given problem is expressed as,
                                     6C4
The numerical value of the combination is 15. Thus, the answer to this item is letter D. 
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Sanjay graphs a quadratic function that has x-intercepts of –3 and 7. Which functions could he have graphed?
kykrilka [37]

we will select each options and find zeros

(a)

g(x)=x^2-4x-21

for finding x-intercept , we can set g(x)=0

and then we can solve for x

g(x)=x^2-4x-21=0

now, we can factor it

(x-7)(x+3)=0

we get

x=7,x=-3

so, this is TRUE

(b)

g(x)=(x-3)(x+7)

we can set it to 0

and then we can solve for x

g(x)=(x-3)(x+7)=0

we get

x=3,x=-7

so, this is FALSE

(c)

g(x)=3x^2-12x-63

we can set it to 0

and then we can solve for x

g(x)=3x^2-12x-63 =0

3(x^2-4x-21) =0

3(x-7)(x+3) =0

x=-3,x=7

so, this is TRUE

(d)

g(x)=-(x+3)(x-7)

now, we can set it to 0

and then we can solve for x

g(x)=-(x+3)(x-7)=0

x=-3,x=7

so, this is TRUE

(e)

we have

g(x)=x^2+4x-21

now, we can set it to 0

and then we can solve for x

g(x)=x^2+4x-21=0

(x+7)(x-3)=0

x=-7,x=3

so, this is FALSE

5 0
3 years ago
Read 2 more answers
Solve for c.<br><br>Give an exact answer.<br><br><br>0.2(10−5c)=5c−16
Zielflug [23.3K]
C = 3
You isolate the variable by dividing each side by factors that don’t contain the variable
5 0
3 years ago
Explain in words how to find the product of -4 (-1.5) using a number line.where do you end up
Ierofanga [76]

Answer:

To multiply two minus numbers they  will result as a positive number.

the product of any numbers when there is a negtive will always have 2 negtives invlved form three numbers including the answer.

-4 x -1.5 is the same as 4 x 1.5

the answer is  6

Three numbers like -1 x  4 will also be 2 numbers of negative.

= -4

We change this to -4 x 1.5 and shows the answer as -6

But the question had 2 negative numbers already and the answer is just positive 6.

8 0
3 years ago
Read 2 more answers
Please please Help me!!!!!
pav-90 [236]

Answer:

19,23

Step-by-step explanation:

9+x-7≥ 21

Combine like terms

2+x≥21

Subtract 2 from each side

2+x-2 ≥21-2

x≥19

Any number greater than or equal to 19

3 0
3 years ago
Pls help me ASAP plssss!!!
Nataly [62]

Answer:

7. $8

8. coupons offer deals upfront, rebates only offer them after purchase, and sales are short times to drive sales

Step-by-step explanation:

7 work. best buy: 60 - 2 = 40     40 x 4 = 160

         Gamestop: 60 x 0.3 = 18   42 x 4 = 168

                            160 - 168 = -8

                            $8 dollars saved by Best Buy

7 0
3 years ago
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