3 years ago

90 is the produ t of donnies savings and 6.

Mathematics

2 answers:

goblinko [34]3 years ago

7 0

U need to add them .

notsponge [240]3 years ago

6 0

You need to add more context im afriad

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Find the value of this expression if x = -9.<br> x2 + 3<br> x +6

iren [92.7K]

Answer:

Step-by-step explanation:

x² + 3 = (-9)² + 3 { (-9)² = -9 *-9 = 81}

= 81 + 3

= 84

x + 6 = -9 + 6 = -3

7 0

3 years ago

Probability of pulling a green marble out of a bag of coloured marble is 2:5 if you were to pull coloured marbles out of the bag

Slav-nsk [51]

Answer: 171 green marbles

Step-by-step explanation: There are 7 total marbles so 100/7 equals 14.28

Then there is a 2 out of 7 total tries so 14.28 * 2 equals 28.57% chance to get a green marble.

600 * 0.2857 = 171.41 marbles but you cant get half a marble so 171 green marbles.

6 0

3 years ago

Find the value of x.

Trava [24]

Answer:

x = 53

Step-by-step explanation:

The sum of the exterior angles of a convex polygon is always 360°.

x +x +59 +48 +50 +39 +58 = 360

2x +254 = 360 . . . . simplify

x +127 = 180 . . . . . . divide by 2

x = 53 . . . . . . . . . . . subtract 127

3 0

2 years ago

On a test that has a normal distribution, a score of 49 falls two standard deviations below the mean, and a score of 61 falls on

Zolol [24]

The mean of this test will be 57.

<h3>What is Standard Deviation and Mean?</h3>

A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean.

The mean can be used to get an overall idea, or picture, of the data set.

Let Mean be 'm'

and standard deviation= $\sigma$

So, m-2 $\sigma$ =49

and, m + $\sigma$ =61

Solving the above two equation we get

$\sigma =4$

Now, m= 61- $\sigma$

= 61-4

= 57

So , the mean of this test will be =57

Learn more about mean and standard deviation here:

brainly.com/question/16030790

#SPJ1

6 0

2 years ago

Someone, please help me

Soloha48 [4]

I think the answer is pumpkin 1

4 0

3 years ago