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inysia [295]
3 years ago
14

The sum of two numbers is 43.their difference is 19.find both numbers

Mathematics
1 answer:
____ [38]3 years ago
4 0
X+y=43
x-y=19
2x=62
x=31
y=12
Hope this helps!
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Ms. May has to pay $5 for each bag of flour to make her cookies. She needs to buy 20 bags of flour. How much will she have to pa
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$100 dollars will be the end price.
5 0
3 years ago
Help math question derivative!
atroni [7]
Let f(x)=\sec^{-1}x. Then \sec f(x)=x, and differentiating both sides with respect to x gives

(\sec f(x))'=\sec f(x)\tan f(x)\,f'(x)=1
f'(x)=\dfrac1{\sec f(x)\tan f(x)}

Now, when x=\sqrt2, you get

(\sec^{-1})'(\sqrt2)=f'(\sqrt2)=\dfrac1{\sec\left(\sec^{-1}\sqrt2\right)\tan\left(\sec^{-1}\sqrt2\right)}

You have \sec^{-1}\sqrt2=\dfrac\pi4, so \sec\left(\sec^{-1}\sqrt2\right)=\sqrt2 and \tan\left(\sec^{-1}\sqrt2\right)=1. So (\sec^{-1})'(\sqrt2)=\dfrac1{\sqrt2\times1}=\dfrac1{\sqrt2}
5 0
3 years ago
Translate the sentence into an inequality.
Liula [17]

Answer:

<h2>10 + 5x ≤ -15</h2>

Step-by-step explanation:

   <u>sentence</u>  <u>—————————-——————></u>  <u>math expression</u>

Ten increased by —————————————>         10 +

the product of a number ‘x’ and 5 —————>        5x

less than -15   —————————-——————>   ...... ≤ -15

<em>Conclusion</em>:

10 + 5x ≤ -15

8 0
2 years ago
There are between 50 and 60 number of eggs in a basket. When Loza counts by 3's, there are 2 eggs left over. When she counts by
Strike441 [17]

Answer:

The number of eggs in the basket is 56

Step-by-step explanation:

Given as :

Let The number of eggs in the basket = 3x + 5x

When Loza counts 3's , there are 2 eggs left over

I.e , 3 ( x - 2 )

And  When Loza counts 5's , there are 4 eggs left over

I.e 5 ( x - 4 )

∴ 3 x - 6 = 5 x - 20

Or, 20 - 6 = 5 x - 3 x

Or,  14 = 2 x

∴     x = 7

So, the number of eggs = 3 × 7 + 5 × 7

                                        = 21 + 35 = 56

Hence The number of eggs in the basket is 56   Answer

4 0
3 years ago
Read 2 more answers
A=8b+c solve for b <br> Please help!
balu736 [363]

Answer:

(A-c)/8 = b

Step-by-step explanation:

A = 8b +c

A - c = b

(A-c)/8 = b

Hope this helps you!

3 0
3 years ago
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