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inessss [21]
3 years ago
7

sally and marta Had the same number of postcards. After sally sold 18 of her postcards,Marta had 4 times as many post cards as s

ally How many post cards did each girl have to begin with?
Mathematics
1 answer:
bekas [8.4K]3 years ago
5 0
The answer is 20 okay
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gogolik [260]

Answer: A.

The reason is because if you're adding a negative to a number, it's subtraction, which is in the expression.

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3 years ago
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If ƒ(x) = x + 2 and g(x) = 3x2 + 7x, find ....
Tamiku [17]

Answer:

The correct answer is option C

(f o g)(x) = 3x² + 7x + 2

Step-by-step explanation:

<u>Points to remember</u>

<u>Composite functions</u>

Let f(x) and g(x) be the two functions then (f o g)(x) can be written as

(f o g)(x) = f(g(x))

<u>To find the value of (f o g)(x)</u>

Here f(x) =x + 2  and g(x) = 3x² + 7x

(f o g)(x) = f(g(x))

 = f(3x² + 7x)

 = 3x² + 7x + 2

Therefore the correct answer is option C

(f o g)(x) = 3x² + 7x + 2

7 0
3 years ago
Find the value of x, if angle x measures 102 degrees
Over [174]
The answer is B
Have a good day!
3 0
3 years ago
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Help asap please!<br><br> 2/5+????=7/10<br><br> Find the missing fraction
docker41 [41]

Answer:

3/10

Step-by-step explanation:

2/5 + x = 7/10

x = 7/10 - 2/5

x = 7/10 - 4/10

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8 0
2 years ago
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What is true of the type of angle in this lesson? It measures half the sum of the arc it intercepts. It measures twice the sum o
Karolina [17]

Answer:

Step-by-step explanation:

Answer: it is C because it is true of the type of angle in this lessonc. It measures half the difference of the arcs it intercepts.

7 0
3 years ago
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