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Liula [17]
3 years ago
8

True or false The solution set of 2x+5=x-3is {-8}

Mathematics
2 answers:
Fofino [41]3 years ago
8 0
The answer is true, that’s the correct answer
irinina [24]3 years ago
3 0

Answer:

True

Step-by-step explanation:

2x+5=x-3 is (-8)

This is the correct answer

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Figure A is a scale image of Figure B.<br> What is the value of x?
Leto [7]

Answer:

The required value of x is 12 units.

Step-by-step explanation:

Given that the figure A is a scale image of figure B.

We are to find the value of x.

Since figure A is the scale image of figure B, so both the figures are similar to each other.

Also, the corresponding sides of the similar figures are proportional, so we get

Thus, the required value of x is 12 units.

5 0
2 years ago
The rate at which a quantity M of a certain radioactive substance decays is proportional to the amount of the substance present
anzhelika [568]

Answer:

2. dM/dt = -0.11M

Step-by-step explanation:

Differential equations for proportional amouts:

A differential equation for proportional amounts is given by:

\frac{dx}{dt} = ax

In which a is the constant rate. If the amount increases, a is positive. If it decays, b is positive.

In this question:

Decays, so a < 0.

Proportional to the amount of the substance present at a given time, which means that a multiplies the amount M.

This means that the correct answer is given by option 2.

3 0
2 years ago
Which one should I choose
SIZIF [17.4K]

Answer:

I think 9 is correct

if answer is correct then please mark me as brainlist

5 0
2 years ago
3.5:8 in decimal form
umka2103 [35]

Answer:

0.4375

Step-by-step explanation:

3.5:8 is the same as 3.5/8 (ratios are like fractions)

and just use a calculator. hope this helps

3 0
3 years ago
Read 2 more answers
Which of the following rotational symmetry is applied to the isosceles triangle​
ioda

Answer:

Rotational symmetry of 180° about the origin: Yes.

Rotational symmetry of 270° about the origin: No.

Explanation:

A figure is a rotationally symmetrical if it look the same after a given turn.

We have to analyze if the parallelogram has rotational symmetry of 180° or 270°. picture the figure rotating a given amount of degrees to see if it looks the same or not.

180 degree rotation:

We can see that the figure looks the same after a 180° rotation.

270 degree rotation:

We can see that the figure does not look the same after a 270° rotation.

So the answer will be:

Rotational symmetry of 180° about the origin: Yes.

Rotational symmetry of 270° about the origin: No.

7 0
3 years ago
Read 2 more answers
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