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storchak [24]
3 years ago
10

POSSIBLE POINTS: 1

Mathematics
2 answers:
matrenka [14]3 years ago
4 0

Answer: :/

Step-by-step explanation:yo que se

kvv77 [185]3 years ago
3 0

Answer:

A) 24 miles

Step-by-step explanation:

So jack rides 4 miles in half an hour.

a full hour = 8 miles.

so we just multiply the amount he rides in 1 hour 3 times.

8*3=24

so 3 hours of maintaining this speed would equal 24 miles of ride time.

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Solve the system of linear equations by substitution.<br><br>−2x−5y=3<br> 3x+8y=−6
Sliva [168]
First you want to know what y or x is i chose y for this on 

so the equation i'm going to use is -2x-5y=3
i want to solve for y

-2x-5y=3
+2x        +2x

-5y=2x+3
 /-5   /-5  /-5
y=-2/5x+-3/5

Now that i solved for y we substitute our answer into the next equation to solve for x like this:

3x+8y=-6
3x+8(-2/5x+-3/5)=-6
3x+ -3.2x+-4.8=-6
-0.2x+-4.8=-6
          +4.8  +4.8
-0.2x=-1.2
/-0.2    /-0.2
x=6

After you know what x is you substitute it in for any of the equations that we started with. I picked 3x+8y=-6 to find y.

3x+8y=-6
3*6+8y=-6
18+8y=-6
-18      -18
8y=-24
/8     /8
y=-3

Since we know what x and y are we substitute it with any of the equations that we started with. i picked -2x-5y=3

-2*6-5*-3=3
-12- -15=3
3=3 
so our solution (6,-3) works 

6 0
3 years ago
What is five times five plus two
vladimir1956 [14]

Answer: Its 27

you do 5x5+2=27

4 0
3 years ago
Read 2 more answers
If u +t=5 and u – t = 2, what is the value of (u – t)(u2 – ť)?<br> ?
raketka [301]

Answer:

The Heaviside step function, or the unit step function, usually denoted by H or θ (but sometimes u, 1 or ), is a discontinuous function, named after Oliver Heaviside (1850–1925), whose value is zero for negative arguments and one for positive arguments.

Step-by-step explanation:

L at time ť will meet at the point z " given by the equations : z " = - ( c + U ) t ... + B ) t = ť + t " = 2y - t = tı ( 93 ) Therefore , we do not recover the value 2t = 2L / c ... if the extinction time is not zero in equation 92 , one can verify the equality t ' + t ... the mirror located on the arm covers the distance Ut ' during the time t

5 0
4 years ago
Simplify <br>(sinA +cosA) (sinA-cosA) ​
kvv77 [185]

Answer:

-cos(2A)

Step-by-step explanation:

We know that (a+b) (a-b) = a^2-b^2

So it means we can simplify to sin^2(A)-cos^2(A) and we know cos^2(A) - sin^2(A) = cos(2A) but we will just multiply by -1 and we get - cos(2A)

5 0
3 years ago
The sum of two squares of two consecutive natural numbers is 41.Find the numbers​
Arada [10]
<h3><u>AnswEr</u><u> </u><u>:</u></h3>

The 2 unknown numbers are 4 and 5 .

<h3><u>Expla</u><u>nation</u><u> </u><u>:</u></h3>

Let the numbers be x and x + 1.

From the given information,

\dashrightarrow\sf \ \ \ x^2 + (x + 1)^2 = 41 \\  \\  \\

\dashrightarrow\sf \ \ \ 2 {x}^{2}  + 2x + 1 = 41 \\  \\  \\

\dashrightarrow\sf \ \ \ 2 {x}^{2}  + 2x + 1 - 41=0 \\  \\  \\

\dashrightarrow\sf \ \ \  {x}^{2}  + x - 20 = 0 \\  \\  \\

\dashrightarrow\sf \ \ \ (x + 5)(x - 4)=0 \\  \\  \\

\dashrightarrow\sf \ \ \ { \underline{ \boxed{ \bf{ \red{x =  - 5,4}}}}} \ \bigstar \\  \\

But, as we know -5 is not a natural number,

Hence, x = 4 .

<u>So the 2 unknown numbers are</u><u> </u><u>:</u>

  • x = 4 [1st number]

  • x + 1 = 4 + 1 = 5 [2nd number]

<h2><u>━━━━━━━━━━━━━━━</u></h2>
7 0
3 years ago
Read 2 more answers
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