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Anastaziya [24]
3 years ago
12

Solve x2 + 6x + 7 = 0.

Mathematics
1 answer:
Mrrafil [7]3 years ago
7 0

Answer:

x = -6 and -1

Step-by-step explanation:

x^2 + 6x + 7

Factorise- find two numbers that multiply to be 6 and add to be 7: 6 and 1

(x+6)(x+1)

Set each expression equal to 0 and solve

x + 6 = 0   -> x = -6

x + 1 = 0    -> x = -1

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Last Tuesday was silly hat day at Carson's school. Of the 2,000 students at the school, 60% wore a silly
Galina-37 [17]

Answer:

1,200

Step-by-step explanation:

because you take 60% and make it .60 and multiply it by 2,000 and you get 1,200

8 0
3 years ago
Point O is the center of this circle. What is m CAB?<br> A.55<br> B.48<br> C.45<br> D.35
Sophie [7]
Answer is B. 48

By circle theorem, the angle at the centre of the circle is twice the angle at the circumference.
3 0
2 years ago
Anyone know the answer
kykrilka [37]
You would need to change the slope to -6 because perpendicular lines have opposite reciprocal slopes.
5 0
3 years ago
A company makes candles in the shape of a right cone. The lateral surface of each candle is covered with
julia-pushkina [17]

Answer:

The amount of paper needed = 363.3 in²

Total amount of paper and plastic needed = 564.3 in

Step-by-step explanation:

As the diagram isn't given.

Consider a right cone shown in the ATTACHMENT.

where

r = 8 in

h = 12 in

First find the value of hypotenuse s by using Pythagoras theorem

<h3>Find Lateral Area:</h3>

The amount of paper needed to cover the candle is lateral area, which is given by:

L=\pi\cdot{r}\cdot{s}\\L =\pi\cdot8\cdot14.422\\L=363.3in^2\\

<h3>Find Surface Area:</h3>

Total amount of paper and plastic is the surface area:

S=L+\pi{r}^2\\S=363.3+\pi(8)^2\\S=564.26in^2

S=564.3in^2

7 0
3 years ago
A jet ski rental charges A flat rate of $75 ,plus an additional $60 per hour you want to spend less than $200. for how many hour
cluponka [151]
The equation to solve would be setting

60×- the m plus 75,the b set to 200 the maximum that's wanted to be used. the equation will look like this

200=60x+75

-75. -75

125=60x
125/60 60x/60

2.08=x

and since you cant round the time the answer will be left at 2
8 0
3 years ago
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