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wariber [46]
3 years ago
11

Which expression is equivalent to 10 a+ 3b -2a+b

Mathematics
2 answers:
Inga [223]3 years ago
8 0

Answer:

Step-by-step explanation:

Simplify like terms.

10a-2a+3b+b = 8a+4b

GarryVolchara [31]3 years ago
4 0

Answer:

8a +4b

4(2a+b)

Step-by-step explanation:

10 a+ 3b -2a+b

Combine like terms

10a-2a   +3b+b

8a +4b

We can factor out 4

4(2a+b)

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Kareem saves his coins in a jar. 30% of the coins are pennies. if there are 24 pennies in the jar, how many coins does Kareem ha
oksian1 [2.3K]
30%=30/100=3/10

3/10 of all=pennies=24
divide by 3
1/10 of all=8
times 10
10/10 of all=80
80 coins she has
5 0
4 years ago
Please helpppppp, i'm stuck
nata0808 [166]

Answer:

The operations you see with you eyes are multiplication and addition.

4 times X plus 2 = 10

The operations you don't see are Subtraction and Division.

4x+2=10

Subtract 2 from both sides.

4x+2−2=10−2

4x=8

Divide both sides by 4.

4x/4  =  8/4

x=2

3 0
3 years ago
Read 2 more answers
A lawn mower is pushed a distance of 100 ft. Along a horizontal path by a constant force of 60 lbs. Yhe handle of the lawn mower
olga2289 [7]
For this case we have the following equation:
 w = || F || • || PQ || costheta
 Where,
 || F ||: force vector module
 || PQ ||: distance module
 costheta: cosine of the angle between the force vector and the distance vector.
 Substituting values:
 w = (60) * (100) * (cos (45))
 w = 4242.640687 lb.ft
 Answer:
 
The work done pushing the lawn mower is: 
 w = 4242.640687 lb.ft
6 0
4 years ago
Please answer this question based on the following data. SSTR = 6,750 H0: μ1= μ2=μ3=μ4 SSE = 8,000 Ha: at least one mean is diff
Nookie1986 [14]

Answer:

P_v =P(F_{3,16}>4.5)=0.0180

So on this case the best option for the answer would be:

between .01 and .025

Step-by-step explanation:

Analysis of variance (ANOVA) "is used to analyze the differences among group means in a sample".

The sum of squares "is the sum of the square of variation, where variation is defined as the spread between each individual value and the grand mean"

If we assume that we have 4 groups and on each group from j=1,\dots,5 we have 5 individuals on each group we can define the following formulas of variation:  

SS_{total}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x)^2  

SS_{between=Treatment}=SS_{model}=\sum_{j=1}^p n_j (\bar x_{j}-\bar x)^2 =6750  

SS_{within}=SS_{error}=\sum_{j=1}^p \sum_{i=1}^{n_j} (x_{ij}-\bar x_j)^2 =8000  

And we have this property  

SST=SS_{between}+SS_{within}=6750+8000=14750  

The degrees of freedom for the numerator on this case is given by df_{num}=k-1=4-1=3 where k =4 represent the number of groups.

The degrees of freedom for the denominator on this case is given by df_{den}=df_{between}=N-K=20-4=16.

And the total degrees of freedom would be df=N-1=20 -1 =19

We can find the MSR=\frac{6750}{3}=2250

And MSE=\frac{8000}{16}=500

And the we can find the F statistic F=\frac{MSR}{MSE}=\frac{2250}{500}=4.5

And with that we can find the p value. On this case the correct answer would be 3 for the numerator and 16 for the denominator.  

P_v =P(F_{3,16}>4.5)=0.0180

So on this case the best option for the answer would be:

between .01 and .025

6 0
4 years ago
Graph The Line.<br> -2x+y= -6
loris [4]
0,6 !!

if this helps say thank you or make me the brainiest:)
3 0
3 years ago
Read 2 more answers
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