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irinina [24]
3 years ago
11

Combine like terms to create an equivalent expression. 3.4-2.8d+2.8d-1.3

Mathematics
1 answer:
jekas [21]3 years ago
3 0

Answer:

2.1

Step-by-step explanation:

when you combine like terms you have to combine the d's with the d's and the nonvariable number with the nonvariable number.

this is how it should look like

(-2.8d+2.8d)+(3.4+(-1.3))

a negitive plus a posative cancel out so the d's disapier and now you only have 3.4+-1.3. this is just like subtracting so you can put it like this

3.4-1.3 and you will get 2.1

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How is the pythogorean theorem used to determine the distance formula
Fiesta28 [93]

Answer:

The distance formula uses the coordinates of points and the Pythagorean Theorem to calculate the distance between points. If A and B form the hypotenuse of a right triangle, then the length of AB can be found using this formula, leg2 + leg2 = hypotenuse2 (or you can use A squared + B squared = C squared)

Am not a real genius but I hope that answers your question! ^w^

5 0
4 years ago
What is <br><br> 4.2 = c/8<br><br> And it would be a lot helpful
liberstina [14]

Step-by-step explanation:

c = 8 × 4.2 (move 8 from the denominator to the side where the 4.2 is - make c the subject)

c = 33.6

7 0
3 years ago
Read 2 more answers
Given lines p and q are parallel, find the value of x that makes each diagram true.
Klio2033 [76]

Answer: for a the answer is 140° and for b x=25°

Step-by-step explanation:

for a, when you have 2 parallel lines cut by a transversal,the corresponding angles are congruent. and the angle140 is congruent to the corresponding angle as they are vertical angles are congruent.

for b, angle x is congruent to the angle that is supplementary to 155 therefore 180-155=25°

5 0
3 years ago
(-12,-5);slope =1/3 write in slope -intercept form​
leonid [27]

Answer:

y = \frac{1}{3} - 1

Step-by-step explanation:

y - y1 = m (x - x1)

y + 5 = \frac{1}{3} (x + 12)

y + 5 = \frac{1}{3} x + \frac{12}{3}

y + 5 = \frac{1}{3} x + 4

y = \frac{1}{3} x - 1

Hope this was helpful :)

7 0
3 years ago
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Alan bought a suit on sale for $208. This price was 35% less than the original price.
algol [13]

Answer:

280.8

Step-by-step explanation:

Since 100% is the full amount, and it is 35% off you add 35 to the 100. So you get 1.35. You finally multiply by 207 and get 280.8

7 0
3 years ago
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