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kykrilka [37]
3 years ago
12

Jakob is asked to simplify the expression –3a + 4b + 5a + (–7b).

Mathematics
2 answers:
Ymorist [56]3 years ago
7 0

Answer:  b commutative property

Step-by-step explanation: idid the test and i got it right

Gala2k [10]3 years ago
3 0

Answer:

Commutave

Step-by-step explanation:

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Center (10, –6), r = 6
gladu [14]
Hope this helps you.

5 0
3 years ago
Pls help due soon!!!
kvasek [131]

Answer:

B) 10 m

Step-by-step explanation:

Area is 20 and Height is 4

Ok so

AREA of a triangle is =1/2Base Times Height

work back

Area=20

Height=4

b=Base

20=1/2b*4

Simplify both sides of the equation.

20=2b

Flip equation

2b=20

Divide both sides by 2

b=10

Base=10 m

3 0
3 years ago
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What percent of all patients are blood type AB? Round your answer to the nearest tenth of a percent. Type a numerical answer in
Makovka662 [10]
Depends on the type of AB, is it AB positive or AB negative

<span>AB-positive: 3.4 percent
<span>AB-negative: 0.6 percent

if you need both add the percentages together</span></span>
6 0
3 years ago
There were 40 fingers total on the number of gloves Mrs. Edwards knitted. How many gloves did Mrs.Edward knit.
GarryVolchara [31]
40 ÷10 = 4

Mrs Edward knitted 4 pairs of gloves.
7 0
4 years ago
Read 2 more answers
A parallelogram has a base of length 2x + 1 and a height of x + 3 and has an area of
storchak [24]

Answer:

  • base 7
  • height 6

Step-by-step explanation:

Using the given expressions, we can write the area as ...

  A = BH

  42 = (2x +1)(x +3) = 2x^2 +7x +3

  2x ^2 +7x -39 = 0

  (x -3)(2x +13) = 0

  x = 3   or   -6.5  . . . . .  these values make the factors be zero

In order for the parallelogram to have positive dimensions, the value of x must be 3. So, the base and height are ...

  base = 2(3) +1 = 7

  height = 3 +3 = 6

7 0
3 years ago
Read 2 more answers
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