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Cloud [144]
3 years ago
6

The real solutions of the system

Mathematics
1 answer:
babymother [125]3 years ago
3 0
Use substitution             3x-7=x^2+6x-17
                            x^2+3x-10=0
                            (x-2)*(x+5)=0
x=2 or -5, plug in back in, y= -1 or -22
check answers--both correct.

the answer is (2,-1) or (-5,-22)
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You are working as a sales clerk in a fabric store and need to determine the price on some fabric. The fabric store sells for $6
mariarad [96]

Answer:

$6.10

Step-by-step explanation:

Given the fabric store sells the fabric for $6.97 per yard

Given that a customer buys 7/8 yard of fabric.

Let the cost the customer pays be x then

1 yard---->6.97

\frac{7}{8} yard---->x

on cross multiplication we get

x\time 1=6.97\times \frac{7}{8}

x=6.01

Therefore the amount the customer should pay is $6.01

6 0
3 years ago
The sum of the roots of 3x 2 + 11x - 4 = 0 is<br><br> -11/3<br> -4/3<br> 11/3<br> 4/3
givi [52]

Answer:

The correct option is 1.

Step-by-step explanation:

If a quadratic equation is defined as

ax^2+bx+c=0             .... (1)

Then the sum of the roots is -b/a and the product of roots is c/a.

The given equation is

3x^2+11x-4=0          ... (2)

From (1) and (2) we get a=3, b=11 and c=-4.

The sum of roots is

\frac{-b}{a}=-\frac{11}{3}

The sum of roots is -\frac{11}{3}.

Therefore the correct option is 1.

5 0
4 years ago
How does theoretical probability of the event flip heads change when a coin is flipped more times in a experiment
Alisiya [41]

Answer:

It increases

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Jackson ran 3.6 miles a day. How many miles did he ran in 4 days?
Shalnov [3]
3.6 x 4 = 14.4, so 14.4 would be the answer. 
6 0
4 years ago
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I have to find x when y=40​
Aloiza [94]

Answer:

about 13 and a third

Step-by-step explanation:

8 0
3 years ago
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