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3 years ago

Find the value of the following expression:

Mathematics

2 answers:

AleksandrR [38]3 years ago

8 0

Answer:

why such complicated questions.....?

Step-by-step explanation:

sweet [91]3 years ago

4 0

Answer:

Step-by-step explanation:

(2⁸ ⋅ 3⁻⁵ ⋅ 6⁰)⁻² ⋅ (3⁻²/2³)⁴ ⋅ 2²⁸ =
2⁻¹⁶·3¹⁰·3⁻⁸·2⁻¹²·2²⁸ =
2⁻¹⁶⁻¹⁰⁺²⁸ · 3¹⁰⁻⁸ =
2⁰ · 3² =
1 · 9 =
9

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Please help me with this math problem, urgent please

Lady bird [3.3K]

Answer:

(X+2)(v-5)

Step-by-step explanation:

first, group and factor out the greatest common factor and combine to get (x+2)(v-5)

4 0

3 years ago

The arrow on the spinner is to be spun once.

Alex

The answer is 2/5. (Do not brainliest)

8 0

4 years ago

Read 2 more answers

The running trail in the local park is 3.416 miles long. If the park board were planning to extend the trail by 1.34 miles, what

morpeh [17]

Answer:

4.756 miles

Step-by-step explanation:

It is given that,

The running trail in the local park is 3.416 miles long. If the park board were planning to extend the trail by 1.34 miles.

We need to find the new length of the running trial. It is equal to the sum of length of running trail and the extended length. So,

l = 3.416 +1.34

l = 4.756 miles

So, the new length of the running trail be 4.756 miles

7 0

3 years ago

Select the correct answer.

Trava [24]

Answer: $\left(\frac{4}{3}, -\frac{5}{3} \right)$

Step-by-step explanation:

Setting the equations equal to each other.

$x-3=-2x+1\\\\3x=4\\\\x=\frac{4}{3}\\\\\implies y=\frac{4}{3}-3=-\frac{5}{3}$

5 0

2 years ago

A sample has a mean of M = 90 and a standard devia-tion of s 20.=a. Find the z-score for each of the following X values.X = 95X

sladkih [1.3K]

Answer:

$\begin{gathered} X=95,z=0.25 \\ X=80,z=-0.5 \\ X=98,z=0.4 \\ X=88,z=-0.1 \\ X=105,z=0.75 \\ X=76,z=-0.7 \end{gathered}$

Explanation:

Given a sample with the following:

• Mean,M = 90

• Standard deviation, s = 20

To find the z-score for each of the given X values, we use the formula below:

$\begin{equation*} z-score=\frac{X-\mu}{\sigma}\text{ where }\begin{cases}{X=Raw\;Score} \\ {\mu=mean} \\ {\sigma=Standard\;Deviation}\end{cases} \end{equation*}$

The z-scores are calculated below:

$\begin{gathered} \text{When X=95, }z=\frac{95-90}{20}=\frac{5}{20}=0.25 \\ \text{When X=80, }z=\frac{80-90}{20}=\frac{-10}{20}=-0.5 \\ \text{When X=98, }z=\frac{98-90}{20}=\frac{8}{20}=0.4 \end{gathered}$ $\begin{gathered} \text{When X=88,}z=\frac{88-90}{20}=\frac{-2}{20}=-0.1 \\ \text{When X=105, }z=\frac{105-90}{20}=\frac{15}{20}=0.75 \\ \text{When X=76, }z=\frac{76-90}{20}=\frac{-14}{20}=-0.7 \end{gathered}$

5 0

1 year ago