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Finger [1]
3 years ago
12

If you estimate 342 ÷ 7 by using 350 ÷ 7 by using 350 ÷ 7 = 50, is 50 greater than or less than the exact answer? How did you de

cide? Is 50 an overestimate or an underestimate?
Mathematics
1 answer:
Anastasy [175]3 years ago
8 0
Its more than the exact answer because you would round 342 to 340 because 350 is an overestimate. I decided because when your rounding you only round up if the ones place value is larger than 5 but in this case its not.

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The difference between eight times a number and three is = to negative nineteen what is the number
jek_recluse [69]
The answer here is -3
3 0
3 years ago
Evaluate (6.1 x 10-3) (8 x 109). Write your answer in scientific notation and standard form.
DerKrebs [107]

Answer:

Scientific Notation: 4.88 ×10^7

Standard Form: 4.88 ×10^7

Step-by-step explanation:

6.1×10^(-3) = 0.0061

8×10^9 = 8000000000

0.0061×8000000000 = 48800000

= 4.88 \times  {10}^{7}

3 0
2 years ago
1. Rewrite the sum of 24 and 40 by factoring out the greatest common factor.
elena-s [515]

Answer:

64

70

72

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
Dillon plans to invest $16,000 part at 4% simple interest and the rest at 5% simple interest what is the most he can invest at 4
marishachu [46]

Answer:

Step-by-step explanation:

The simple interest formula is P * r * t = I, where P is the initial investment, r is the interest rate in decimal form, t is the time in years.  This problem would be best solved by making a table, one row for account 1 and one row for account 2 with the formula along the top:

              P     *     r     *     t     =     I

acct 1

acct 2

First let's fill in our years.  The words "per year" were used, so the time in each row is a 1:

            P     *      r      *      t       =      I

acct 1                                 1

acct 2                                1

Now let's fill in the interest rates as decimals:

         P     *     r     *     t     =     I

acct 1            .04          1

acct 2           .05          1

Now for the principle amount.  If all we have to invest is 16000 and we put x into one account, then all we have left to put into the other account is what's left after taking x out of 16000, or 16000 - x.

                     P      *      r      *      t      =      I

acct 1             x           .04           1

acct 2   16000 - x       .05          1

The formula tells us that we multiply the P times the r times the t to get I, so lets do that.  Multiply straight across the top to get an interest of .04x.  Multiply straight across the bottom to get an interest of .05(16000 - x) which, after distributing, is 800 - .05x:

                 P      *      r      *      t      =      I

acct 1         x           .04            1      =    .04x

acct 2   16000-x    .05            1      =   800 - .05x

We need the amount of interest that we earn from both of these accounts to equal 700, so add the last column and set it equal to 700:

.04x + 800 - .05x = 700.  Combine like terms to get

-.01x = -100 so

x = 10,000

That means that the account which has an interest rate of 4% can have 10,000 in it while the other account has 6,000 in it.

5 0
3 years ago
Find the gcf of the pair of numbers. 35 and 21 the gcf is .
makvit [3.9K]
You r GCF would be 7 because it multiplies both those numbers 
8 0
2 years ago
Read 2 more answers
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