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jekas [21]
3 years ago
7

I need help on this question!

Mathematics
2 answers:
zlopas [31]3 years ago
6 0
The answer I am not sure but will try
Ans: 110
bija089 [108]3 years ago
6 0

Answer:

110 cookies in 180 minutes

Step-by-step explanation:

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Write the number in scientific notation. 322,000,000
Crazy boy [7]
It would be 3.22x10^8
have a good day
8 0
3 years ago
Read 2 more answers
Solve for x in the equation x2 - 4x-9 = 29.
erastova [34]

Answer:

x=2+\sqrt{21}\\\\x=2-\sqrt{21}

Step-by-step explanation:

One is given the following equation;

x^2-4x-9=29

The problem asks one to find the roots of the equation. The roots of a quadratic equation are the (x-coordinate) of the points where the graph of the equation intersects the x-axis. In essence, the zeros of the equation, these values can be found using the quadratic formula. In order to do this, one has to ensure that one side of the equation is solved for (0) and in standard form. This can be done with inverse operations;

x^2-4x-9=29

x^2-4x-38=0

This equation is now in standard form. The standard form of a quadratic equation complies with the following format;

ax^2+bx+c

The quadratic formula uses the coefficients of the quadratic equation to find the zeros this equation is as follows,

\frac{-b(+-)\sqrt{b^2-4ac}}{2a}

Substitute the coefficients of the given equation in and solve for the roots;

\frac{-(-4)(+-)\sqrt{(-4)^2-4(1)(-38)}}{2(1)}

Simplify,

\frac{-(-4)(+-)\sqrt{(-4)^2-4(1)(-38)}}{2(1)}\\\\=\frac{4(+-)\sqrt{16+152}}{2}\\\\=\frac{4(+-)\sqrt{168}}{2}\\\\=\frac{4(+-)2\sqrt{21}}{2}\\\\=2(+-)\sqrt{21}

Therefore, the following statement can be made;

x=2+\sqrt{21}\\\\x=2-\sqrt{21}

8 0
3 years ago
I need help with problem
topjm [15]
D + q = 40
.10d +.25q= $7.75

d +q = 40
d =40-q
.10(40-q) +.25q= $7.75
4 - .10q + .25q =7.75
4 +.15q =7.75
4-4 +.15q =7.75-4
.15q= 3.75
.15q/.15 = 3.75/.15
q = 25

d =40-25
d = 15

Check
.10(15) +.25(25)= $7.75
1.5+6.25=7.75
7.75=7.75
8 0
3 years ago
the speeders scccer team charged $12 to wash each car at a fundraiser car wash. the team collected a total of $672 by the end of
snow_lady [41]
All u have do do is add 12 ×56 and u will get 627 so they will wash 56 cars
4 0
3 years ago
Given a triangle with b = 7, C = 3, and A = 37° what is the length of a? Round to the nearest tenth.
marissa [1.9K]

Answer: 4.9

Step-by-step explanation:

5 0
3 years ago
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