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frutty [35]
3 years ago
7

Evaluate 4 a + 5 b when a=3 and b= -1.2

Mathematics
2 answers:
AleksandrR [38]3 years ago
5 0

Answer:

6

Step-by-step explanation:

4 a + 5 b

a=3 and b= -1.2

4(3) +5(-1.2)

12 +-6

6

Basile [38]3 years ago
3 0

Answer:

6

Step-by-step explanation:

Plug the values of a and b into the equation.

4(3) + 5(-1.2)

12 + (-6)

Adding negatives basically means subtracting, so...

12-6 = 6

Therefore your answer is 6

Hope this helps!

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If you can multiply Ax B, then which of the following statements is true about
HACTEHA [7]

To multiply B and A, the number of columns of B must matc the number of rows of A.

<h3>When we can multiply two matrices?</h3>

When we multiply two matrices, A and B, we multiply the rows of matrix A by the columns of matrix B.

Now, the number of elements in a row of a matrix, is equal to the number of columns (and the number of elements in a column is equal to the number of rows).

To multiply BxA:

Then, a row on matrix B must have the same number of elements than a column in row A.

Then, to multiply BxA, the number of columns of B must match the number of rows of A, meaning that the correct option is the last one.

If you want to learn more about matrices, you can read:

brainly.com/question/11989522

8 0
2 years ago
Find the measure of arc DF
givi [52]

Answer:

Step-by-step explanation:

Angle E is one-half the measure of the difference between arc CG and arc DF. Mathematically, that looks like this:

44=\frac{1}{2}(160-DF) and

44(2) = 160 - DF and

88 = 160 - DF and

-72 = -DF so

DF = 72 degrees, second choice down

7 0
3 years ago
My sister is 2 years older than I am. The sum of our ages is 32. Find our ages.
VikaD [51]
Lets call your age x and your sisters would be x +2
x + x + 2 = 32
combine like terms
2x + 2 = 32
32 - 2 = 2x
32 - 2 = 30
2x = 30 
x = 15

Your age is 15 and your sisters is 17

<span>Hope This Helps You!
</span>Good Luck Studying :)
4 0
3 years ago
Read 2 more answers
(7*5*2 / 7*3)^(2) *(5^(0) / 2^(-3) * 2^(-9)=??? does it make sense to anyone?? please help...
saul85 [17]
Evaluate
remember that x^0=1
and x^-m=1/(x^m)

simplify
PEMDAS
parenthasees exponentes mulitplciraon or diviosn additon or subtraction

parethasees first

inside to ut
lef to right
7*5*2/7*3
70/21
10/3

then in the next partnheasees
5^0/2^-3 times 2^-9
1/(1/2^3)(1/2^9)
1/(1/8)(1/512)
8/512
1/64

so now we have
(10/3)^2 times 1/64
100/9 times 1/64
100/576
25/144

you should group them better so it is easier to read


8 0
4 years ago
Read 2 more answers
Can somebody plz help draw the spinner with these probabilities on the question like take a pic of how it looks like or explain
DanielleElmas [232]

I will draw a rough figure, you can draw it neatly.

Probability =

Probability = No. of favourable outcomes/ Total no. of outcomes

Probability = No. of favourable outcomes/ Total no. of outcomesTotal number of outcomes = 4

So, here:

P(2) = 2/4 = 1/2

P(1) = 1/4

P(3) = 1/4

P(4) = 0

Here, the probability of getting 2 is ½.

Probability of getting 1 is ¼.

Probability of getting 3 is ¼.

Probability of getting 4 is 0.

6 0
3 years ago
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