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irinina [24]
3 years ago
13

Help me with this pls

Mathematics
1 answer:
Alecsey [184]3 years ago
5 0

Answer:

$3.17

Step-by-step explanation:

3 soft drinks at $2.50 each → 3 x $2.50 = $7.50

3 soft drinks + 3 candy bars = $16.50

$7.50 + 3 candy bars = $16.50

3 candy bars = $9.50

1 candy bar = $9.50/3 = $3.17 (3s.f.)

this is a question on forming and solving equations. If you wish to explore more into this topic you can give me a follow on Instagram (learntionary) I'll be posting the notes for several topics and some tips as well!

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Which translation will change figure ABCD to figure A'B'C'D'?
Liono4ka [1.6K]

Answer:

5 units left and 7 units up

Step-by-step explanation:

idk  i amn as confused as you

8 0
3 years ago
Suppose the time a child spends waiting at for the bus as a school bus stop is exponentially distributed with mean 7 minutes. De
Gala2k [10]

Answer:

The probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

Step-by-step explanation:

Let the random variable <em>X</em> represent the time a child spends waiting at for the bus as a school bus stop.

The random variable <em>X</em> is exponentially distributed with mean 7 minutes.

Then the parameter of the distribution is,\lambda=\frac{1}{\mu}=\frac{1}{7}.

The probability density function of <em>X</em> is:

f_{X}(x)=\lambda\cdot e^{-\lambda x};\ x>0,\ \lambda>0

Compute the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning as follows:

P(6\leq X\leq 9)=\int\limits^{9}_{6} {\lambda\cdot e^{-\lambda x}} \, dx

                      =\int\limits^{9}_{6} {\frac{1}{7}\cdot e^{-\frac{1}{7} \cdot x}} \, dx \\\\=\frac{1}{7}\cdot \int\limits^{9}_{6} {e^{-\frac{1}{7} \cdot x}} \, dx \\\\=[-e^{-\frac{1}{7} \cdot x}]^{9}_{6}\\\\=e^{-\frac{1}{7} \cdot 6}-e^{-\frac{1}{7} \cdot 9}\\\\=0.424373-0.276453\\\\=0.14792\\\\\approx 0.148

Thus, the probability that the child must wait between 6 and 9 minutes on the bus stop on a given morning is 0.148.

6 0
3 years ago
Numbers whose decimals do not end and do not repeat are
eduard

Answer:

It's an irrational number

Step-by-step explanation:

Examples:

√2 = 1.4142135623730950488016887242096980785696718...

π = 3.14159265358979323846264338327950288419716939...

e =  2.718281828459045235360287...

∛10 = 2.1544346900318837217592935665193504952593449421921...

and more

If the number has a finite or repeating decimal, then it is a rational number.

Examples:

2.75

-1.3333...

0.4545454545...

6 0
3 years ago
Read 2 more answers
Show your work as you go along.
lana66690 [7]
2x+3(2x-4y)+8y-2
2x+6x-12y+8y-2
8x-12y+8y-2
8x-4y-2
8 0
3 years ago
100 POINTS PLEASE HELP ME PLEASE DON'T GO PASS THIS QUESTION!!!!
valina [46]
The two points are
(4,2) , (6,5)
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3 years ago
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