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harina [27]
4 years ago
5

Solve the 2 step equation: 2a - 3 = -5

Mathematics
2 answers:
anygoal [31]4 years ago
8 0

Answer:

-1

Step-by-step explanation:

alekssr [168]4 years ago
3 0

Answer:

The value of a is -1.

Step-by-step explanation:

First, you have to add 3 to both sides :

2a - 3 + 3 =  - 5 + 3

2a =  - 2

Next, you have to divide both sides by 2 :

2a \div 2 =  - 2 \div 2

a =  - 1

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Assume that the readings on the thermometers are normally distributed with a mean of 0 degrees0° and standard deviation of 1.00d
Alex

Answer:

The diagram is attached below.

Step-by-step explanation:

A normal distribution mean 0 and standard deviation 1 is known as the standard normal distribution.

So, the readings on the thermometers (denoted by <em>Z</em>) follows N (0, 1).

It is provided that 2.7​% of the thermometers are rejected because they have readings that are too high and 2.7​% are rejected because they have readings that are too low.

This implies that:

P(Zz)=0.027

The value of <em>z</em> associated to both these probabilities are:

<em>z</em> = 1.93.

That is,

P(Z1.93)=0.027

*Use a <em>z</em>-table.

The diagram for the two readings that are cutoff values separating the rejected thermometers from the others is attached below.

6 0
4 years ago
- 18/25 as a desimal? <br> A: -0.72<br> B: -0.28<br> C: 1.07<br> D: 1.38
sladkih [1.3K]

Answer:

-0.72 (A)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
The smallest integer that can be added to -2m3 − m + m2 + 1 to make it completely divisible by m + 1 is .
Iteru [2.4K]

Answer:

(-5) is smallest integer to be added.

Step-by-step explanation:

In the given expression we have to identify the smallest integer to be adeed so that it is divisible by (m+1).

If we divide the expression then we get quotient (-2m²+3m-4) and the remainder is +5.

Therefore we can say that if we subtract 5 from the given expression it will be divisible by (m+1).

So the answer is (-5) is the smallest integer to be added.

5 0
3 years ago
Larry Mitchell invested part of his $36,000 advance at 7% annual simple interest and the rest at 2% annual simple interest. If h
alisha [4.7K]

The amount invested at each rate

Investment at 7% = $25000

Investment at 2%  = $11,000

<h3>What is investment?</h3>

Investment definition is an asset acquired or invested in to build wealth and save money from the hard earned income or appreciation.

Given:

Larry Mitchell invested = $36,000 at 7% annual simple interest

the rest at 2% annual simple interest.

Total investment = 36000

let the investment at 7% is x

then, invested at 2% = 36000 - x

Total interest earned = $1,970

Simple interest = principal * rate * time

Investment at 4%:

(x * 0.07) + [(36000 - x) * 0.02] = 1970

0.07x + 720 - 0.02x= 1970

0.05x = 1970-720

0.05x = 1250

x= 25000

Hence,

Investment at 7% = $25000

Investment at 2% = $36,000 - $25000 = $11,000

Learn more about this concept here:

brainly.com/question/18801028

#SPJ1

7 0
2 years ago
What is the value of q in equation √4q-2=√3q+8
Dmitry [639]

Answer:

  q = 10

Step-by-step explanation:

As your equation is written, the radical sign only appies to 4 or 3, so you have ...

  (√4)q -2 = (√3)q +8

  (2 -√3)q = 10 . . . . . . . . . . . . . . . add 2-(√3)q

  q = 10/(2 -√3) ≈ 37.3205... . . . . (an irrational number)

___

We suspect you intend

  √(4q -2) = √(3q +8) . . . . . . . <em>parentheses are required</em> for grouping

Square both sides, then add 2-3q.

  4q -2 = 3q +8

  q = 10

The value of q in the equation √(4q-2) = √(3q+8) is 10.

6 0
4 years ago
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