Helpppp plz

What is the value of x?

Answer:

x = 101/20, y = 1/4

Step-by-step explanation:

Solve the following system:

{-y + 5 x = 25 | (equation 1)

3 y + 5 x - 1 = 25 | (equation 2)

Express the system in standard form:

{5 x - y = 25 | (equation 1)

5 x + 3 y = 26 | (equation 2)

Subtract equation 1 from equation 2:

{5 x - y = 25 | (equation 1)

0 x+4 y = 1 | (equation 2)

Divide equation 2 by 4:

{5 x - y = 25 | (equation 1)

0 x+y = 1/4 | (equation 2)

Add equation 2 to equation 1:

{5 x+0 y = 101/4 | (equation 1)

0 x+y = 1/4 | (equation 2)

Divide equation 1 by 5:

{x+0 y = 101/20 | (equation 1)

0 x+y = 1/4 | (equation 2)

Collect results:

Answer: {x = 101/20, y = 1/4

Answer:

21

Step-by-step explanation:

The values for the third side of a triangle must be greater than the difference of the two other sides and less than the sum of the two other sides

12 -8 < x < 12+8

4 < x < 20

The third side cannot be 21

Answer:

21

Step-by-step explanation:

The sum of two sides of a triangle must be greater than the third side

Answer:

C

Step-by-step explanation:

The graphs are reflected across the y-axis.

Answer:

A

Step-by-step explanation:

Check the solution by substituting x = [tex]\frac{\pi }{2}[/tex] into the left side of the equation

2sin²x - sinx - 1

= 2sin²([tex]\frac{\pi }{2}[/tex] ) - sin ([tex]\frac{\pi }{2}[/tex] ) - 1

= 2(1)² - 1 - 1

= 2 - 1 - 1

= 0

= right side

[tex]\frac{\pi }{2}[/tex] is therefore a solution to the equation

Answer:

maybe the answer is

Answer:

6cm

Step-by-step explanation:

Given data

Width= 4.6cm

Length= 9cm

Volume= 82.8cm^3

The expression for the volume is given as

V= lwh/3

82.8= 9*4.6*h/3

cross multiply

82.8*3= 9*4.6*h

248.4= 41.4h

h= 248.4/41.4

h= 6cm

Answer:

834 chirps

Step-by-step explanation:

Given the data:

Chirps in 1 min Temperature (°F)

781 74

1039 85.9

1156 87.2

1218 87.8

1131 91.4

888 75.5

Using technology, the regression model obtained will be in the form :

y = bx + c

b = slope ; c = intercept

y = temperature ; x = chirps per minute

The regression model is :

ŷ= 43.28 + 0.0390x

If outside temperature, y = 76 ; x will be ;

76 = 43.28 + 0.0390x

76 - 43.28 = 0.0390x

32.72 = 0.0390x

x = 32.72 / 0.0390

x = 838.97435

x = 834 chirps per minute

Answer:

(-4,2)

Step-by-step explanation:

It's the coordinates that the two lines cross at.

Answer:

b°+90°=180°(sum of angle in straight line)

b°=180°-90°

b°=90°

a°=30°(vertically opposite angle)

Answer:

A: 30 degrees

B: 60 degrees

C:105 degrees

Step-by-step explanation:

A: vertical angles are congruent

B: solve for the missing angle -- 90+30+?=180

C: Use exterior angle to find the supplementary angle

Answer:

270

Step-by-step explanation:

72 ÷ 4 = 18

6 + 5 = 11

18 × 11 = 198

198 + 72 = 270

Answer:

length:70cm

breadth:15cm

Step-by-step explanation:

170cm÷2=85cm

85cm=14:3

14+3=17

85cm÷17=5cm

5cm×14=70cm

5cm×3=15cm

Step-by-step explanation:

please see the attachment

Answer:

$3.15

Step-by-step explanation:

Method 1:

4 oranges = 1.40

9 oranges = x

1.40 / 4 = 0.35

This is 0.35 per orange

0.35 x 9 = 3.15

$3.15

Method 2:

1.40/4 = x/9

12.6 = 4x       (cross multiply 9 and 1.4 and cross multiply 4 and x)

x = 12.6 / 4

x = 3.15

$3.15

If my answer is incorrect, pls correct me!

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-Chetan K

Happy Pride Month!

Answer:

320m

Step-by-step explanation:

let the two runners be A and B

with Va and Vb as their velocities

velocity=distance/time

Va=720/4*60

=3m/s

Vb=720/5*60

=2.4m/s

Let the 2 runners start from a common position X and meet at Y

so the 2 consecutive meetings happen at X and Y

so we have to find time of meeting at Y as we know that of X (which is t=0)

720=Va*t+Vb*t

t(5.4)=720

t=133.33 or t=720/5.4

therefore distance travelled by B =Vb*t

=2.4*720/5.4

=319.99m

=320m

Answer:

i would be a be i solve 15 minutes

B

Answer:

Step-by-step explanation:

you can find where the first derivative is 0 to find the critical points

g'(x) = ( x^4 -5x^2 +4)' = 4x³-10x

g'(x) =0, make y =0 to find find where g'(x) is 0

4x³-10x =0 , factor 2x

2x(2x²-5)= 0 , each factor must be 0

2x= 0, so x= 0

2x²-5 =0, so x = ±√5/2

we now have 3 critical points -√5/2, 0, and √5/2

make intervals (-∞, -√5/2), (-√5/2, 0) , (0, √5/2) and (√5/2, +∞)

pick a point to test on each interval: -2, -1, 1 and 2 for example, and

calculate g'(x) = 4x³-10x at those points

for x= -2 we have 4(-2)³-10(-2) = -12 , negative number, decrease

for x= -1 we have 4(-1)³-10(-1) =6, positive number, increase

for x= 1 we have 4(1)³-10(1) = -6, negative number, decrease

for x= 2 we have 4(2)³-10(2) = 12, positive number, increase

we went from a decrease to an increase on intervals (-∞, -√5/2), (-√5/2, 0) so x= - √5/2 ≈ -1.58 is a minimum

we went from a decrease to an increase on intervals (0, √5/2), (√5/2, +∞) so

x= √5/2 ≈ 1.58 is a minimum as well

Answer:

interest he got per year is 22.75

Step-by-step explanation:

deposited money = 650

after 5 years = 763.75

interest he got = 763.75 - 650

                         = 113.75

interest he got each year = 113.75 / 5

                                          = 22.75

Answer:

(x−10)(x^2+10x+100)

Explanation:

I talked to my partner, you can call them "G00gle"

[tex] \large{ \tt{❃ \: EXPLANATION}} : [/tex]

[tex] \large{ \tt{❁ \: LET'S\: START}} : [/tex]

[tex] \large{ \bf{ ❀ \: \ {x}^{3 } - 1000}}[/tex]

- Write the number into the exponential form with the exponent 3 :

[tex] \large{ \bf{↦ {x}^{3} - {10}^{3} }}[/tex]

- Here , Suppose ' x ' as ' a ' & ' 10 ' as ' b '. Use the formula of a³ - b³ :

[tex]↦{ \large{ \bf{(x - 10)( {x}^{2} + x \times 10 + {10}^{2} }}})[/tex]

[tex]↦ \boxed{\large{ \bf{(x - 10)( {x}^{2} + 10x + 100) }}}[/tex]

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Answer:

Angles 5 and 6 are next to each other and sum up to 180°.

Step-by-step explanation:

supplement means adding up to 180

Angles 5 and 6 are next to each other and sum up to 180°.

Step-by-step explanation:

supplement means adding up to 180

Answer:

6×4

2×12

8×3

Step-by-step explanation:

I know!

Answer:

the second part to the question is 17

Step-by-step explanation:

edge 2021 :)

have a lovely day!

Answer:

6.11 ft

Step-by-step explanation:

s = (∅/360) * 2πr

s = (35/360) * 2π(10)

s = 6.108652382

Rounded

s = 6.11 ft

Answer:

d. 360°

Hope this help!

Answer: Coupon B gives the lower price

The price of coupon B is  3.75 dollars   less than the price of coupon A.

======================================================

Explanation:

15% off means she saves 15% of the original price.

15% of 95 = 0.15*95 = 14.25

Rachel saves $14.25 if she goes with coupon A.

We can see that coupon B gives the lower price because we have more in savings (since 18 is larger than 14.25).

If she goes with option A, then she spends 95-14.25 = 80.75 dollars. If she goes with option B, then she spends 95-18 = 77 dollars. Going with option B means she saves 80.75-77 = 3.75 dollars

Or you could note that 18-14.25 = 3.75 is another way to find out how much is saved when comparing the two coupons.

Answer: acute angles

Step-by-step explanation:

The angle between the routes from Brownwood is Acute angle.

Acute angle is an" angle that measures less than 90 degree".

According to the question,

Distance from Austin to Brownwood is 141 miles and distance from Brownwood to Corsicana to Austin 171miles and distance from Corsicana to Austin is 157 miles.

In order to find an angle between routes from Brownwood is Acute angle.

Hence,  the angle between the routes from Brownwood is Acute angle.

Learn more about Acute angle here

https://brainly.com/question/2237497

#SPJ2

Answer:

The answer is 3

Step-by-step explanation:

It's just wisdom I mean think about it it

1.5 then 3

⭐ Initially, we have to find the reason why it was -1.5:

[tex]\large {\text {$ \sf f (n+1) = -2 f(n) $}}[/tex]

➡️ Having n, then we'll find the value of n, then we'll replace it with the found result.

[tex]\large {\text {$ \sf f (x+1) = -2.x = -1,5 $}}[/tex]

⌛ So, we will have to find what x is worth in this case:

[tex]\large {\text {$ \sf f ( 0,75 +1 ) = -2 \cdot 0,75 $}}[/tex]

[tex]\large {\text {$ \sf f ( 0,75) = -1,5 $}}[/tex]

→ Knowing this...

[tex]\large {\text {$ \sf f ( 1,5 + 1 ) = -2 \cdot 1,5 $}}[/tex]

[tex]\large {\boxed {\boxed {\sf f ( 2,5 ) = -3 }}}[/tex]     [tex]\checkmark[/tex]

_____________________________

Answer:

19 degrees, 70 degrees, 91 degrees

Step-by-step explanation:

to make an interior angle of a triangle you need to make a 180-degree triangle and 19+70+91 make 180 degrees

Answer:

19, 70, 91

Step-by-step explanation:

19 + 70 + 91 = 180. Everything else doesn't add up to 180.

Answer:

B)  M-5

Step-by-step explanation:

the commutative property does not apply to subtraction or division, only addition and multiplication

Answer:

8/17

Step-by-step explanation:

total students = 34

no of girls = 16

no of boys = 18

probability to choose a girl to answer the question = no of girls/total students

=16/34

=8/17