3 years ago

What’s 2(2a+ 3b - 4) if a=2 and b=3

Mathematics

1 answer:

Aleksandr [31]3 years ago

5 0

Answer:

2 ( 2a + 3b - 4)

Putting the value of a= 2 and b = 3 in the equation

2( 2(2) + 3(3) -4)

2 (4 + 9 -4)

2( 4 -4 + 9)

2 (0 + 9)

2 (9)

2 × 9

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Class A has 25 pupils and class B has 28 pupils. Both classes sit the same maths test. The mean score for class A is 69. The mea

il63 [147K]

Answer:

Step-by-step explanation:

Mean would mean average, which in this case is $\frac{x+y}{2}$

so your equation would look like $\frac{69+x}{2}=41$

Next multiply both sides by to clear the fraction $2*(\frac{69+x}{2})$

to get $69+x=89$

Subtract 69 from both sides $69+x=82\\-69 -69$

you get $x = 13$

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2 years ago

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3 years ago

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Olin [163]

1,260 possible arrangements of "balloon" using 7!/[2!*2}

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3 years ago

Read 2 more answers

What are the x and y intercepts of the below equation

lozanna [386]

Plug in 0 for x
0 - 6y = 30
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Plug in 0 for y
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3 years ago

Which statement is true about the value of |-14|

fomenos

Answer:

Step-by-step explanation:

Next time, please share the possible answer choices.

The absolute value of any quantity, whether it be a + or - quantity, is zero or positive.

Thus, |-14| = the absolute value of -14 = +14

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3 years ago