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Damm [24]
4 years ago
13

Janie bought 3 apples and 9 bananas. Each apple costs $0.30, and each banana costs $0.90. Enter an expression representing the t

otal cost. NEED ANSWER ASAP PLEASE
Mathematics
1 answer:
ehidna [41]4 years ago
4 0

Answer:

0.3a + 0.9b

Step-by-step explanation:

1 apple = $0.3

1 banana = $0.9

a apples = $0.3 * a

b bananas = $0.9 * b

total cost = 0.3a + 0.9b

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We want to factor the following expre
mote1985 [20]

Step-by-step explanation:

(x - 3)^{2}  - 10(x - 3) + 25 \\  = (x - 3)^{2}  - 5(x - 3)  - 5(x - 3)+ 25 \\  = (x - 3) \{(x - 3) - 5 \} - 5 \{(x - 3) - 5 \}  \\  =  \{(x - 3) - 5 \} \{(x - 3) - 5 \}  \\  = (x - 8)(x - 8) \\  \\ another \: way \\  \\ (x - 3)^{2}  - 10(x - 3) + 25   \\ = (x - 3)^{2}  - 2 \times 5 \times (x - 3) +  {5}^{2}  \\  =  \{(x - 3) - 5 \}^{2}  \\  = \{x - 3 - 5 \}^{2}  \\  = \{x - 8 \}^{2} \\  = (x - 8)(x - 8)

8 0
4 years ago
How do I fine the perimeter of these triangles?
arsen [322]

constant of proportionality => COP

3: P(triangle ABC) = 84

COP = 18/15 = 1.2

Since you are finding the larger triangle, multiply the other numbers by 1.2

25 * 1.2 = 30

28 * 1.2 = 33.6

17 * 1.2 = 20.4

add them all up (answer up top)

5: P(triangle ABC) = 61.2

COP = 9/5 = 1.8

Since you are finding the larger triangle, multiply the other numbers by 1.8

9 * 1.8 = 16.2

13 * 1.8 = 23.4

12 * 1.8 = 21.6

add them all up (answer up top)

6: P(triangle RST) = 110

RP and PT are congruent, this means that PT is also 20

COP = 40/20 = 2

Since you are finding the larger triangle, multiply the other numbers by 2

25 * 2 = 50

20 * 2 = 40

10 * 2 = 20

add them all up (answer up top)

3 0
3 years ago
Type the expression that results from the following series of steps
Naddika [18.5K]

Answer:

(y-d) × a + c

Step-by-step explanation:

You start with y:

y

subtract d:

y-d

multiply by a:

(y-d) × a

then add c:

(y-d) × a + c

Hope that helps! :)

5 0
3 years ago
An angle measures <br> 49°<br> . What is the measure of its complement?
Viktor [21]
Well if t's a right angle then the answer would be 41° but if it's an obtuse angle the it could vary from 91°-179°. For a straight angle, the answer would be 51° and for an acute angle; it could vary from 1°-89° I hope this helped ^^
4 0
3 years ago
Miss Conrads art class was painting murals she had four bottles of red paint five bottles of green paint for bottles of yellow p
Ksenya-84 [330]

Answer:

she had lots of paint

Step-by-step explanation:

ur welcome boo

8 0
4 years ago
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