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Katena32 [7]
3 years ago
13

A rectangle has a length of 15 cm and a width of 11 cm. What is its perimeter?

Mathematics
2 answers:
polet [3.4K]3 years ago
4 0
15 + 15 + 11 + 11 = 52
zhenek [66]3 years ago
4 0

Answer:

52cm

Step-by-step explanation:

P=2(l+w)=2·(15+11)=52cm

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The amount a car dealership earns for selling a car is directly proportional to the price of the car. The table shows this relat
Travka [436]
I think its 2 because if you divide 20,000 over 1000 you get 2. If you do that for the other values, you would also get 2.
3 0
3 years ago
50 Points plus brainliest plz help asap please no wrong answers
andrew-mc [135]

Answer:

<h2>170</h2>

Step-by-step explanation:

given:

Ann, Ben, and Cindy were eating strawberries.

The ratio of the numbers of berries they ate is 5:5:7.

If Cindy ate 30 strawberries less than Ann and Ben together,

find:

what is the total number of strawberries the three of them ate?

solution:

add the ratios 5 +5+7 = 17

since Cindy ate 30, less than Ann and Ben together so, the factor is

7x = 5x + 5x - 30

7x - 10x = -30

x = 30/3

x = 10

ann 5 x 10 = 50

ben 5 x 10 = 50

cindy 7 x 10 =<u> 70  </u>

total            = 170

6 0
3 years ago
Read 2 more answers
The profit P (in dollars) from selling x calculators is P=25x(-10x+ 250). How many calculators are sold when the profit is $425?
Crank
Okay, so this is what I came to. I think that you might need to look through the placement of the problem again and your x's, but other than that, here it is!

Step 1: Simplify both sides of the equation.<span>425=<span><span>−<span>250<span>x2</span></span></span>+<span>6250x

</span></span></span>Step 2: Subtract -250x^2+6250x from both sides.<span><span>425−<span>(<span><span>−<span>250<span>x2</span></span></span>+<span>6250x</span></span>)</span></span>=<span><span><span>−<span>250<span>x2</span></span></span>+<span>6250x</span></span>−<span>(<span><span>−<span>250<span>x2</span></span></span>+<span>6250x</span></span>)</span></span></span><span><span><span><span>250<span>x2</span></span>−<span>6250x</span></span>+425</span>=0
</span>
Step 3: Use quadratic formula with a=250, b=-6250, c=425.<span>x=<span><span><span>−b</span>±<span>√<span><span>b2</span>−<span><span>4a</span>c</span></span></span></span><span>2a</span></span></span><span>x=<span><span><span>−<span>(<span>−6250</span>)</span></span>±<span>√<span><span><span>(<span>−6250</span>)</span>2</span>−<span><span>4<span>(250)</span></span><span>(425)</span></span></span></span></span><span>2<span>(250)</span></span></span></span><span>x=<span><span>6250±<span>√38637500</span></span>500</span></span><span><span>x=<span><span>252</span>+<span><span><span><span>110</span><span>√15455</span></span><span> or </span></span>x</span></span></span>=<span><span>252</span>+<span><span><span>−1</span>10</span><span>√15455
</span></span></span></span><u>
Answer:</u><span><span>x=<span><span>252</span>+<span><span><span><span>110</span><span>√15455</span></span><span> or </span></span>x</span></span></span>=<span><span>252</span>+<span><span><span>−1</span>10</span><span>√<span>15455</span></span></span></span></span>
6 0
3 years ago
when asked to factor the trinomial 8x^2 -8x-16, a student gives the answer (x-2)(x+1). what is wrong with this answer?
Anni [7]
D.8 is also a factor of this trinomial
8 0
3 years ago
What is a polygon with 3 sides called ?<br> A trigon <br> B 3agon<br> C Triangle <br> D hexagon
Nina [5.8K]
A polygon with 3 sides is a triangle!
7 0
3 years ago
Read 2 more answers
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