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Vitek1552 [10]
3 years ago
12

There are 3 children in a family named Lisa, Susan, and John. If Lisa is 5 years older than her sister, Susan, and if John is 7

years older than Lisa, and the total of the ages of all 3 children is 50, then how old is Susan
Mathematics
2 answers:
Dvinal [7]3 years ago
5 0

Answer:

Susan is 8

Step-by-step explanation:

Elan Coil [88]3 years ago
5 0

Answer:

Lisa: 16

Susan: 11

John m: 23

Step-by-step explanation:

Susan: s

Lisa: s+5

John: s+5+7 = s+12

s + s+5 + s+12 = 50

3s + 17 = 50

3s = 33

s = 11

s+5 = 16

s+12 = 23

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What is the y-intercept of the graph of the function f(x)=x^2+3x+5?
marta [7]

Answer:

y int = (0,5)

Step-by-step explanation:

hope this helps

8 0
2 years ago
Read 2 more answers
2x2 − 4x = 0<br> A. <br> 0, -4<br> B. <br> 0, -2<br> C. <br> 0, 2<br> D. <br> 2, 4
leonid [27]

Answer:

C

Step-by-step explanation:

We see that we can factor out 2x from the equation! So our equation becomes 2x(x-2) = 0.

Since the only way for things to multiply to equal to zero is if at least one of the numbers is 0.

So if x-2 is the 0, then x = 2.

If 2x is the 0, then x = 0.

So our answer is C. 0,2

5 0
3 years ago
3. A square metal plate has a density of 10.2 g/cm3 and weighs 2.193 kg.
MakcuM [25]

Answer:

215 cm³

8.6 cm

Step-by-step explanation:

given,

density = 10.2 g/cm³

mass = 2.193 kg = 2193g

a. Volume = mass / density

=2193 / 10.2

= 215 cm³

b. given that base area = 25cm²

volume = base area x thickness

thickness = volume / base area

= 215 / 25

= 8.6 cm

4 0
3 years ago
Please help thank you
Elodia [21]

Answer:

a1 = 6

a2 = 15

a3 = 24

a4 = 33

Step-by-step explanation:

Let k =1

a1 =-3 +9(1) = -3 +9 = 6

Let k = 2

a2 = -3 +9(2) =-3+18 = 15

Let k =3

a3 =-3 +9(3) = -3 +27 = 24

Let k = 4

a4 = -3 +9(4) =-3+36 = 33

8 0
3 years ago
PLEASE HELP ASAP!!! CORRECT ANSWERS ONLY PLEASE!!!
mixas84 [53]

    5x³ + 8x² - 7x - 6

1)

x + 2 is a factor because when using synthetic division, the remainder is zero.

-2  |  5    8    -7    -6

    <u>|  ↓   -10    4     6 </u>

       5   -2    -3     0  ← remainder is zero

2)

x + 2 is not a factor because when using synthetic division, the remainder is not zero.

-1  |  5    8    -7    -6

    <u>|  ↓  -5    -3     10 </u>

       5   3    -10    4  ← remainder is not zero


3 0
2 years ago
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