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schepotkina [342]
3 years ago
7

What is the solution of this equation? -9+7b=8b-7​

Mathematics
1 answer:
Anni [7]3 years ago
3 0

Answer:

b=-2

Step-by-step explanation:

-9+7b=8b-7\\-9+9+7b=8b-7+9 \leftarrow \text {Addition Property of Equality} \\7b+8b=2\\7b-8b+8b-8b=2\leftarrow \text {Subtraction Property of Equality} \\-b=2\\\frac{-b}{-1}=\frac{2}{-1}  \leftarrow \text {Division Property of Equality}\\\boxed {b=-2}\\\\\huge\text {The value of 'b' should be -2}

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Whats A fraction thats a repeating decimal Between 0.25 and 0.5
serg [7]

Answer:

So, a repeated rational can be :->

--> 0.33333333...

Which can be expressed as 1/3 hope this helps


4 0
3 years ago
Which transformation maps the large triangle onto the small triangle? dilation reflection rotation translation
sweet [91]

A rotation transformation is where you turn a figure about a given point. The point about which the object is rotated can be inside the figure or anywhere outside it. There must be no change in shape or size of the object.

A reflection of an object is the 'flip' of that object over a line, called the line of reflection.

A translation is a term used in geometry to describe a function that moves an object a certain distance. The object is not altered in any other way. It is not rotated, reflected or re-sized.

All these three transformations are rigid - preserve the figure sizes.

A dilation is a transformation that changes the size of a figure. It can become larger or smaller, but the shape of the figure does not change.

Answer: dilation maps the large triangle onto the small triangle

7 0
4 years ago
Read 2 more answers
HELPPPPPP ASAP What is the length of the third side of the window frame below? (5 points) (Figure is not drawn to scale.) 58a 1)
ollegr [7]

Answer:

The answer is 3) 40.

Step-by-step explanation:

since you're working with the Pythagorean theorem, you should know that a^2+b^2=c^2, therefore, we know that we only have two sides. we have a and c. we know that a = 42 and c = 58, giving us the equation of 42^2+b^2=58^2,

we want to find b!

so we would simply subtract the two.

58^2 - 42^2 = b

b = 1600

now we want to square root,

b = sqrt1600

which in the end, gives us the answer of 40.

4 0
3 years ago
Sonia was offered a job in a bakery where she would be working 16.5 hours each
mart [117]

Answer:

she would make more at the flower shop

Step-by-step explanation:

16.5 * 8.50= 140.25

21.5 * 7.60= 163.40

163.40 - 140.25 = 23.15

4 0
3 years ago
An isosceles triangle has a base of 20cm and legs measuring 36cm. How long are the legs of a similar triangle with a base measur
Veronika [31]

Answer:

90 cm

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, then

50 ÷ 20 = 2.5

The legs of the similar triangle are 2.5 times the original legs, that is

legs of similar triangle = 2.5 × 36 cm = 90 cm

8 0
3 years ago
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