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Maru [420]
3 years ago
9

(12 POINTS FOR WHOEVER GIVES ME THE EXPLAINED/CORECT ANSWER)

Mathematics
2 answers:
Alja [10]3 years ago
7 0
This question only gives a maximum of 6 points.
OLga [1]3 years ago
4 0
100y+x=230
150y+x=320
Y being the price per kilogram of steel bar, x being the added delivery fee.

If you were to solve the equaltion it would go x=230-100y by changing the first equation around the replacing that for the x int he second group, so you would get 150y+230-100y=320 or 50y=90 So Y=9/5dollars per kilogram. Or $1.8per kilogram, the delivery fee being $50
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For the right triangle shown, which expression represents the length of CB?
Rudik [331]

Answer:

B) 6 tan(35°)

Step-by-step explanation:

from the right angle tan° = opposite / adjacent

therefore tan (35°) = (x) / 6

by multiplying 6 to both sides

tan (35°)  * 6 = (x) / 6 * 6

therefore (x) = 6 tan (35°)

5 0
3 years ago
Kayla's age is 3 less than twive her brother's age. Kayla is 13 years old. How old is her brother?
Kamila [148]

Answer: 6


Step-by-step explanation:

3 times 2


7 0
4 years ago
Solve the differential equation x^3y"'− 3x^2 y" 6xy'−6y = 0.
Anna [14]
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<span> 3.1 </span>    Pull out like factors :

  <span> -3x3y7 + x3y - 6y</span>  =  <span> -y • (3x3y6 - x3 + 6)</span> 

Trying to factor a multi variable polynomial :

<span> 3.2 </span>   Factoring   <span> 3x3y6 - x3 + 6</span> 

Try to factor this multi-variable trinomial using trial and error<span> 

 </span>Factorization fails

<span>Equation at the end of step  3  :</span><span> -y • (3x3y6 - x3 + 6) = 0 </span><span>Step  4  :</span>Theory - Roots of a product :

<span> 4.1 </span>   A product of several terms equals zero.<span> 

 </span>When a product of two or more terms equals zero, then at least one of the terms must be zero.<span> 

 </span>We shall now solve each term = 0 separately<span> 

 </span>In other words, we are going to solve as many equations as there are terms in the product<span> 

 </span>Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation :

<span> 4.2 </span>     Solve  :    -y = 0<span> 

 </span>Multiply both sides of the equation by (-1) :  y = 0 

3 0
3 years ago
What is the quotient of -3/8 and -1/3?<br><br> A. -1 1/8 <br> B. -1/8<br> C. 1/8<br> D. 1 1/8
Free_Kalibri [48]

Answer: A

Step-by-step explanation: if i recall, for the second Number, when flipping the number the sign flips to. If it's not A, it's D

-3/8 × 3/1 = -9/8= 1 1 / 8

3 0
3 years ago
In a certain grocery store, strawberries cost $4.48 per pound ( 4.48 dollars/lb ). What is the cost per ounce?
Andrej [43]

To solve this problem, all we have to do is to convert the pounds to ounce. We know that the conversion factor is:

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Therefore:

<span>cost per ounce = ($ 4.48 / pound) * (1 pound / 16 ounce) = $0.28 / ounce</span>

3 0
4 years ago
Read 2 more answers
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