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san4es73 [151]
3 years ago
7

I need this answer, please?

Mathematics
1 answer:
Anvisha [2.4K]3 years ago
4 0

Answer:

4.23

Step-by-step explanation:

3.68 + 0.21 + 0.25 + 0.01 + 0.08 = 4.23

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You are making a new type of deodorant from two different mixtures the first mixture is 30% smell proof and the second mixture i
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Answer:

600 L of 30% proof and 400 L of 80% proof is needed

Step-by-step explanation:

Let the amount of 30% smell proof be x while that of 80% smell proof is y

Then;

x + y = 1000 •••••(i)

Also;

30% of x + 80% of y = 50% of 1000

0.3x + 0.8y = 500 •••••(ii)

From i, x = 1000 - y

Put this into ii

0.3(1000-y) + 0.8y = 500

300 - 0.3y + 0.8y = 500

0.5y = 500-300

0.5y = 200

y = 200/0.5

y = 400 L

But x = 1000 - y

x = 1000 - 400 = 600 L

3 0
3 years ago
Camilla has four more books when Jane has Camilla has 15 books how many books does Jane have
STatiana [176]

Answer:

Jane has 11 books

Step-by-step explanation:

If Camilla has 15 and she has 4 more than Jane just subtract 15 - 4 = 11

5 0
3 years ago
At a candy store you can pay $16.10 for 7 giant lollipop what would be the cost for 6 lollipops?
Alex Ar [27]

Answer: $13.80 for 6 giant lollipops

Step-by-step explanation: To find the cost of 6 giant lollipops at the candy store, we first need to find the unit price for a giant lollipop.

Unit price means the cost per unit,

in this case, the cost per giant lollipop.

Since we know that it costs $16.10 for 7 giant lollipops, to find the cost

for 1 giant lollipop, we need to 16.10 by 7.

16.10 divided by 7 is 2.3.

This means that each lollipop is $2.30.

Now to find the cost for 6, we multiply

the cost per 1 lollipop by 6.

So we have 2.30 × 6 which is $13.80.

So the cost for 6 lollipops at the candy store is $13.80.

8 0
3 years ago
It took Jaheim 2 hours to read the first 100 pages of a book what was his speed?
jeka94
If in 2 hours he read 200 pgs then in 1 hour will be 50 pgs
4 0
3 years ago
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A projectile is thrown upward so that its distance above the ground after t seconds is given by the function h(t) = -16t2 + 704t
Alex787 [66]
You need to find the x-coordinate (h) of the vertex of the parabola.

-16t^2+704t=0\\
h=-\dfrac{b}{2a}=-\dfrac{704}{2\cdot(-16)}=22


After 22 seconds.
4 0
3 years ago
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