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Gwar [14]
2 years ago
10

Find the x- and y-intercepts of the parabola y=x2+10x+4

Mathematics
1 answer:
Nuetrik [128]2 years ago
6 0

Answer:

x-intercepts: -5 +/-\sqrt{21}. y-intercept: 4

Step-by-step explanation:

For x-intercepts use the quadratic equation

x= (-b +/-\sqrt{b^2-4ac} )/2a

Fill in your values:

x= (-10 +/-\sqrt{100-16} )/2

And solve

x=-5 +/- \sqrt{21}

For y-intercepts set x=0 and solve. In this case, setting x= 0 gives you y=4.

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3 years ago
Answer true and false please<br> thanks
Aleksandr [31]
Option a is true and others are false

6 0
3 years ago
Bottles of sparkling water usually cost $1.69 each. This week they are in sale for 4 for $5. You bought one last week and one th
Phantasy [73]

Answer:

The cost of 1 sparkling bottle in this week is less than last week, so we pay less this week.

We pay $0.44 less this week.

Step-by-step explanation:

Given,

Cost of 1 sparkling bottle last week = $1.69

This week cost of 4 bottles is $5.

So we have to find the cost of 1 bottle.

For this we use the unitary method, we get the cost of 1 bottle;

Cost of 1 sparkling bottle this week = \frac{5}{4}=\$1.25

The cost of 1 sparkling bottle in this week is less than last week, so we pay less this week.

For finding how much we pay less this week, we have to subtract cost of 1 sparkling bottle this week from cost of 1 sparkling bottle last week.

Framing the above sentence in equation form, we get;

Amount\ of\ money\ we\ pay\ less=1.69-1.25=\$0.44

Hence we pay $0.44 less this week.

8 0
3 years ago
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dybincka [34]

Answer:

28/100

55/100

40/100

50/100

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
2х - Зу = 32<br> x + 4у = -20<br><br><br> solve the system of equations
ANTONII [103]
Answer: x=68/11 and y=-72/11


Steps:

2(x+4y=-20)

2x+8y=-40

2x - 3y = 32
- 2x + 8y = -40

-11y=72

y=-72/11


x + 4(-72/11) = -20

x - 288/11 = -20

x=68/11
5 0
3 years ago
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