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larisa86 [58]
3 years ago
13

Rita bought some large packets of salt weighing 500grams each and some small packets of salt weighing 200 grams each. If she has

8 packets altogether and they weigh 2200 grams in total, how many of each kind does she have?
Mathematics
1 answer:
Rama09 [41]3 years ago
5 0
L+S=8, L=8-S

500L+200S=2200, using L from above in this equation gives you:

500(8-S)+200S=2200

4000-500S+200S=2200

4000-300S=2200

-300S=-1800

S=6, and since L=8-S:

L=2

So Rita bought 2 large packets and 6 small packets.
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GaryK [48]

use pemdas

8 * 6 + 2 * 7 =

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Help me please ( on the image )
Mrac [35]

Answer:

\frac{\pi}{3} radians

Step-by-step explanation:

Number of hours on a clock = 12

Since, measure of a circle at the center = 360°

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Central angle formed by the arc intercepted by the hands of the clock at 8:00 = 4 × 30°

        = 120°

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                                                              = \frac{\pi }{3}

Angle formed by the hands of the clock at 8:00 = \frac{\pi}{3} radians

6 0
2 years ago
When placed in the box below, what expression will complete an example of the commutative property of addition 7(2+9)= ?
ANEK [815]

The expression for 7(2+9) IS A(B+C) which is distributive property of addition over multiplication.

Only two arithmetic procedures are subject to the commutative property: Multiplication and Addition

 A + B = B + A Which is Commutative property of addition

A.B = B.A, which is a commutative property of multiplication.

Distributive property is A(B+C) =AB+AC

The operation on numbers that are available in brackets can be distributed for each number outside the bracket, according to the distributive property. It is one of the mathematical properties that is used the most. Commutative and associative qualities are the other two important features.

from the given data 7(2+9) =7*2+7*9

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Now, we can clear that 7(2+9) =7(9+2)

Hence, the expression for commutative property of addition is A(B+C) = AB+AC.

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6 0
1 year ago
Simplify the expression.<br><br> (−2g5h2)5
vampirchik [111]
I am sure you are trying to type

( - 2 {g}^{5} {h}^{2} {)}^{5}
If that is it, then you should recall the law of exponents which says,

({a}^{m} {)}^{n} = {a}^{mn}
Let us share the exponent for each of them.

( - 2 {g}^{5} {h}^{2} {)}^{5} = ( { - 2)}^{5} ( { {g}^{5}) }^{5} ( { {h}^{2}) }^{5}
We now apply the law,

( - 2 {g}^{5} {h}^{2} {)}^{5} = ( { - 2)}^{5} ( { {g}^{5 \: \times 5}) }^{} ( { {h}^{2 \times 5}) }^{}
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( - 2 {g}^{5} {h}^{2} {)}^{5} = -32 {g}^{25} {h}^{10}

If that is not the expression let me know so I will know how to help you
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The box plot shows the calorie count in a few meals from a fast food chain. What is the least number of calories in a meal?
patriot [66]

Answer:

220

Step-by-step explanation: it just is

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