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3 years ago

I need some help with fractions

Mathematics

1 answer:

Tju [1.3M]3 years ago

7 0

for #3, 7 out of the eight pieces are shaded... 7/8

Now, we need however many out of 16, so you need to multiply 7 and 8 both by 2, 14/16... so you should shade 14 out of the 16 pieces

Hope this helped!!! :)

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Math help @LIEMONDER

klio [65]

First picture)
I: 5x+2y=-4
II: -3x+2y=12

add I+(-1*II):
5x+2y-(-3x+2y)=-4-12
8x=-16
x=-2

insert x=-2 into I:
5*(-2)+2y=-4
-10+2y=-4
2y=6
y=3

(-2,3)

question 6)
I: totalcost=115=3*childs+5*adults
II: 33=adults+childs
33-adults=childs

insert childs into I:
115=3*(33-adults)+5*adults
115=99-3*adults+5*adults
16=2*adults
8=adults

insert adults into II:
33-8=childs
25=childs

so it's the last option

question 7)
a) y<6 and y>2 can also be written as 2<y<6, so solution 3 exist for example
b) y>6 and y>2 can also be written as 2<6<y, so solution 7 exist for example
c) y<6 and y<2 inverse of b: y<2<6, so for example 1
d) y>6 and y<2: y<2<6<y, this is impossible as y can be only either bigger or smaller than 2 or 6

so it's the last option

question 8)
I: x+y=12
II: x-y=6

subtract: I-II:
x+y-(x-y)=12-6
2y=6
y=3

insert y into I:
x+3=12
x=9

(9,3)

question 9)
I: x+y=6
II: x=y+5

if you take the x=y+5 definition of II and substitute it into I:
(y+5)+y=6

which is the second option :)

5 0

3 years ago

At the market you can buy 5 bags of apples for $23.60. At the orchard you can get 7 bags of apples for 32.76. Which is the bette

mars1129 [50]

So you want to find the price for 1 apple you find that by dividing so 23.60/5=4.72
and 32.76/7=<span>4.68
so, the 7 bag for 32.76 is the better deal</span>

5 0

3 years ago

Read 2 more answers

Help me pls... ....

musickatia [10]

Step-by-step explanation:

1 yard = 3 feet

1 foot = 12 inches

therefore,

100 yards = 100×3×12 inches = 3600 inches

again, 1 yard = 3 feet

8 ft = 8/3 = 2.67 yards = 2 2/3 yards

1 gallon = 8 pints

1 liter = 1000 milliliters (remember, "mili" means 1/1000).

therefore,

2.2 liters = 2.2×1000 = 2200 milliliters

again, 1 liter = 1000 milliliters

therefore

1 milliliter = 1/1000 liter

670 milliliters = 670 × 1/1000 liter = 670/1000 liter =

= 0.67 liter

1 kg (kilogram) = 1000 grams ("kilo" means 1000).

we have 3 layers.

each layer weighs (cake plus icing)

1/2 kg + 100 g = 500 g + 100 g = 600 g

3 layers then weigh

3×600 g = 1800 g

the additional candle weighs 250 g.

so, the total is

1800 g + 250 g = 2050 g = 2.05 kg

area is 110 m².

1 m = 100 cm ("centi" means 1/100).

and 1 m² is then 100×100 = 10000 cm².

so, the area in cm² is

110 × 10000 = 1,100,000 cm²

the top area of one brick = 10 × 20 = 200 cm²

so, we need

1,100,000 / 200 = 11,000 / 2 = 5500 bricks

6 0

2 years ago

Round to the nearest tens 312.432

ValentinkaMS [17]

310, since 4 is not up to 5, then 2 round off to 0

8 0

3 years ago

Read 2 more answers

Alot of people text me and say "hey bbg" and "bbg you fine"

Semenov [28]

Answer:

bbg means Babygirl

Step-by-step explanation:

It is a compliment/petname. It is meant to call a girl cute, or if you want to address someone in a flirty way. That's the best way i can explain it lol

8 0

2 years ago

Read 2 more answers