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devlian [24]
3 years ago
8

Nancy and Kevin collect coins. Nancy has x coins. Kevin has nine coins fewer than three times the number of coins Nancy has. Wri

te and simplify an expression for the total number of coins Nancy and Kevin have.
Mathematics
2 answers:
jarptica [38.1K]3 years ago
6 0

Answer:

its a and then c.

Step-by-step explanation:

Korolek [52]3 years ago
5 0
Expression: 3x-9 + x
simplified: 4x+9
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Un pájaro vuela en línea recta desde la copa de un árbol a otro árbol que está 2 metro más abajo, formando un ángulo de vuelo 70
olga_2 [115]
....uhh soy una penedeja..
3 0
3 years ago
A bowl contains blueberries and strawberries. There are a total of 48 berries in the bowl. The ratio of blueberries to strawberr
Dvinal [7]

Answer:

a. 36 blueberries and 12 strawberries

b. 16 blueberries and 4 strawberries

Step-by-step explanation:

The computation of each berry in the bowl is shown below;

a. Total 48 berries

The Ratio of blueberries to strawberries is 9:3

So, the blueberries is = 48 × 9 ÷ (9  + 3) = 36

And, the strawberries is = 48 × 3 ÷ (9 + 3) = 12

b. Total 20 berries

The Ratio of blueberries to strawberries is 4:1

So, the blueberries is = 20 × 4 ÷ (4 + 1) = 16

And, the strawberries is = 20 × 1 ÷ (4 + 1) = 4

6 0
2 years ago
Are triangles DEF and LNM similar if LN equals 5 MN equals 3 DE equals 10 and FE equals 6
melisa1 [442]

Answer:

D.  Yes by SAS Similarity Postulate

Step-by-step explanation:

This is the answer because if you flip triangle LNM around to shape the DEF.  Then you will see that:

1. angle D is congruent to angle L

2. angle E is congruent to angle N

3. angle F is congruent to angle M

4. angle E and N are both 90 degrees

Because (DE and LN) and (MN and FE) are similar and (E and N) are 90 degrees, then we do not need (FD and ML) to tell if triangle DEF and triangle LNM is similar or not. They are similar.

We next need to figure out if the triangles are similar by SSS (Side-side-side) Similarity Postulate or SAS (side-angle-side) Similarity Postulate.  The SAS Similarity Postulate states that if you have 2 similar sides and 1 congruent angle, then the two shapes are similar. Right now we have 2 similar sides in (DE and LN) and (MN and FE) and 1 congruent angle that are both 90 degrees. This follows all the rules of the SAS Similarity Postulate, so that means that these two triangles are similar by SAS Similarity Postulate.

4 0
3 years ago
My question is the picture​
AysviL [449]

Answer:

20 students

Step-by-step explanation:

You first have to add the number of students all up and you get 200.Then you do cross multiplication.

40/200 x s/100=

40x100= 4000=

200xs= 200s=

200s/200=

4000/200=

20=

5 0
2 years ago
True or false, the following expressions are equivalent:
drek231 [11]

Answer:False

Step-by-step explanation:

3 0
2 years ago
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