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iren [92.7K]
3 years ago
8

Working together, Sophie and Lily solved 53 math problems. Lily solved 19 fewer problems than three times the number Sophie solv

ed. How many problems did each girl solve?
Mathematics
1 answer:
asambeis [7]3 years ago
5 0

Answer:

Lily=35, Sophie =18

Step-by-step explanation:

Sophie =x

Lily=3x-19

Lily (x)+ Sophie (3x-19)=53

x+3x-19=53

4x=72

x=18 sophie

‘3x-19=Lily

3(18)-19. Lily

54-19.     Lily

35.          Lily

Lily + Sophie-53

35+18=53

53=53

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If a car is depreciated in four years, what's the rate of depreciation using twice the straight-line rate?
Ulleksa [173]

Answer:

The rate of depreciation is 50%

Step-by-step explanation:

We are given

a car is depreciated in four years

so, depreciation in 1 year is

=\frac{1}{4}

the rate of depreciation using twice the straight-line rate

so, we will multiply by 2 and then we can find rate of depreciation

so, rate of depreciation is

=2\times \frac{1}{4}\times 100

=50%


6 0
3 years ago
Read 2 more answers
Select the correct answer from each drop-down menu.
tino4ka555 [31]

Answer:   The correct answer is:   [C]:  "  15^{(7/4)} " .

____________________________________

Step-by-step explanation:

____________________________________

Note the property for square roots in exponential form:

_____________________________________

     →    \sqrt[a]{(b)^ c}  ;  ↔  bb^{(c/a)} ;

    { a\neq 0 ; [a^{(b/c)}]\neq 0 ; c\neq 0  .}.

_____________________________________

As such, given:

     →    \sqrt[4]{(15^7)} ;  

  a = 15,  b = 7,  c = 4 .

     

     →    \sqrt[4]{(15^7)} ;   ↔  15^{(7/4)} ;

     →  which corresponds to:

_____________________________________

Answer choice:  [C]:  "  15^{(7/4)} " .

_____________________________________

Hope this helps!

  Wishing you well in your academic endeavors!

_____________________________________

5 0
3 years ago
Which of the following is a factor of x4 + 5x3 - 4x2 - 8x + 6? <br> 2x+3<br> x-1<br> 2x-3<br> x+1
muminat

Answer:

x + 1

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
Does anyone understand what to do here?
My name is Ann [436]

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

There are several possible ways to describe the "type" of a polynomial. Here, since there is a separate column for "degree", we assume that "type" refers to the number of terms.

Polynomials with 1, 2, or 3 terms are called, respectively, <em>monomial</em>, <em>binomial</em>, and <em>trinomial</em>. The first two expressions listed have 1 term only, so are monomials. The last expression has 3 terms, so is a trinomial.

__

The coefficients are the constant multiplier of the term. Some say a "constant", such as the -8 in the last expression, is not considered a coefficient, because there are no variables that it is multiplying. Here, we have listed it among the coefficients in that expression.

__

The degree of a term is the sum of the degrees of the variables in the term. For terms with only one variable, it is the exponent of that variable. For terms such as the second expression, the degree is the sum of the exponents: 3+4 = 7. The degree of a polynomial with more than one term is the highest degree of all the terms.

3 0
3 years ago
Show how to make a ten to solve 13-7
Vsevolod [243]
13=3+10
so it is now
3+10-7
we know that 10-7=3 so we now have
3+3=6
tada
4 0
4 years ago
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