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soldier1979 [14.2K]
3 years ago
14

4 questions needed help on.

Mathematics
2 answers:
dalvyx [7]3 years ago
8 0
9. 10%
10. 0.7
11. 68.5
12. 4
SOVA2 [1]3 years ago
8 0
9) 10%
10) 0.7
11) 68.5
12) .4
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Which statements are TRUE? Select all that apply. Marisa drives 112 miles in 1 hour and 45 minutes, which means her speed is 64
valentinak56 [21]

Answer: See explanation

Step-by-step explanation:

a. Marisa drives 112 miles in 1 hour and 45 minutes, which means her speed is 64 miles per hour.

Speed = Distance / Time

= 112 / 1 45/60

= 112 / 1 3/4

= 112 × 4/7

= 64 miles per hour.

TRUE

b . If 6 pens cost $7.74, then 7 pens cost $9.03.

Cost of one pen = $7.74/6 = $1.29

Cost of 7 pens = $1.29 × 7 = $9.03

TRUE

c. If Raymond drives at a speed of 57 miles per hour, then it takes him 4 hours and 10 minutes to drive 256.5 miles.

Speed = Distance / Time

Speed = 256.5 / 57 = 4.5 = 4 hours 30 minutes

FALSE

d. If 17 identical cans of soup cost $38.59, then 3 of the cans must cost $6.81.

Cost of one can = $38.59 / 17 = $2.27

Cost of 3 cans = $2.27 × 3 = $6.81

TRUE

e. Mr. Mayes buys two dozen eggs for $8.40, which means that he pays 70 cents per egg.

A dozen = 12

2 dozens = 12 × 2 = 24

Cost of one egg = $8.40 / 24 = 0.35 = 35 cents

FALSE

8 0
3 years ago
Help on this please will make brainliest
Kisachek [45]

Answer:

help on what?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
476 Marks<br> boole<br> Calculate the area of this triangle.<br> 17 cm<br> 8 cm<br> 15 cm
Naddika [18.5K]

Answer:

Step-by-step explanation:

sides =8 cm, 17 cm and 15 cm

Area of triangle by Hero's Formula,

S=a+b+c/2

S=17+8+15/2

S=40/2

S=20

A=\sqrt{s(s-a)(s-b)(s-c)}

A=\sqrt{20(20-17)(20-8)(20-15)}

A=\sqrt{(20)(3)(12)(5)}

A=\sqrt{3600}

A=60 cm^{2}

4 0
2 years ago
The cost of 50 pounds of beans is $?<br> Pls help!!
maksim [4K]

Answer:

69,78!!

Step-by-step explanation:

Espero te sirva  

4 0
2 years ago
Solve the equation by completing the square.<br><br> 3x^2 -6+9=0
Debora [2.8K]
The factored form would be (3x-9)(x-1)
The picture should help a bit
8 0
3 years ago
Read 2 more answers
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