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wolverine [178]
3 years ago
7

Help me please ASAP

Mathematics
1 answer:
Oliga [24]3 years ago
3 0

Answer:

30

Step-by-step explanation:

if im reading the qestuion right

so she had 80 bucks she spend 20 on a ticked so she has 60 left so if im reading it right she spent all of her money so 60 divde by 2 is 30.  

hoped this helped!

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Substitute the variable and solve the problem
Ann [662]

Answer:

don't know the answer but hope this helps

Substituting for a Variable

If you know the value that the variable is equal to, you can substitute that value in for the variable in the expression! Let's look at an example. Since we know that x=5, we can directly substitute or replace the x in the expression x+3 with a 5 to solve for y!

8 0
3 years ago
Find the margin of error for the given values of c, o, and n.<br> C =0,95, 0 =2.6, n = 100
diamong [38]

Answer:

Margin of error = 0.475

Step-by-step explanation:

Given that,

Confidence level, C = 0.95

Sample size, n = 100

Population standard deviation, \sigma = 2.6

When the confidence level is 0.95, the value of z_{\alpha/2}=1.645

The margin of error is given by :

E=z_{\alpha/2}\times \dfrac{{\sigma}}{\sqrt{n} }\\\\E=1.645\times \dfrac{{2.6}}{\sqrt{81} }\\\\=0.475

So, the margin of error is 0.475.

6 0
3 years ago
Find the product of 2x^(4x² + 3x + 1). (1 point)
Vladimir79 [104]

Answer:

A - 8x + 6x² + 2x

Step-by-step explanation:

source: trust me bro

6 0
2 years ago
What is the slant height of a square pyramid that has a surface area of 336 square meters and a side length of 12
Artist 52 [7]

Check the picture below.

the surface area of the pyramid is simply the area of the four triangular faces plus the squarish base, and the triangular faces have a base of 12 and an altitude or height of "s", and we know that's 336.

336~~ = ~~\stackrel{\textit{\LARGE Areas}}{\stackrel{square}{(12)(12)}~~ + ~~\stackrel{\textit{four triangles}}{4\left[ \cfrac{1}{2}(\underset{b}{12})(\underset{h}{s}) \right]}}\implies 336~~ = ~~144~~ + ~~24s \\\\\\ 192=24s\implies \cfrac{192}{24}=s\implies 8~m=s

6 0
2 years ago
5 schools sent some students to a conference.
almond37 [142]
School 1:
16 boys
Boys: Girls = 1:2
Girls= Boys x2
Girls = 32
Total students= girls + boys = 16 + 32 = 48

All 5 schools sent the same number of students
48 x 5 = 240
Answer = 240
7 0
3 years ago
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