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3 years ago

3x-5y= -7 9x+7y= 89 Solve the system of equations and enter answer an an ordered pair.

Mathematics

1 answer:

Sati [7]3 years ago

8 0

Honestly I don't know that is a really hard question

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Ashley wants to find out how much money she has in her piggy bank. She has x number of quarters and y number of dimes and says t

patriot [66]

Amount from dimes would be: 0.1y
Amount from quarters = 0.25x

So, total amount = 0.25x + 0.1y

So, she is not correct

Hope this helps!

5 0

3 years ago

Given that x = 7.3 m and θ = 52°, work out AB rounded to 3 SF.

trapecia [35]

Answer:

223hjvfcnv5ctdydxrxr hgho8

6 0

3 years ago

Please can u answer all the questions!!! Thank u soo much

DiKsa [7]

4.a) 2x=7*3

2x=21

x=21/2 OR

x=10.5

4.b)5x=25*6

5x=150

x=150/5

x=30

4.c)4x=5*14

4x=70

x= 70/4

x=17.5

4.d)4x=9*3

4x=27

X=27/4

X=6.75

4.e)x=0.05*3

X=0.15

4.f)x=0.25*7

X=1.75

4.g)x=0.4*1.5

X=0.6

4.h)x=0.7*2.2

X=1.54

5a)x/7=7-3

X/7=4

X=4*7

X=28

B)2x/5=3+8

2x/5=11

2x=11*5

2x=55

X=55/2

X=27.5

C)2x/3=74-26

2x/3=48

2x=48*3

2x=144

X=72

(I can’t finish all but it is the same method )

5 0

3 years ago

What is the reason for Statement 5 of the two-column proof?

zmey [24]

Given: ∠JNL and ∠MNK are vertical angles and m∠MNK=90°

Prove: ∠JNL is a right angle.

Statements Reasons

1. ∠JNL and ∠MNK are vertical angles. Given

2. $\angle JNL \cong \angle MNK$ Vertical angle theorem

3. $m \angle JNL = m \angle MNK$ Angle congruence postulate

4. $m \angle MNK = 90^\circ$ Given

5. $m \angle JNL = 90^\circ$ Substitution Property of Equality

Since, the measures of angle JNL and MNK are equal and the measure of angle MNK is 90 degrees. therefore, by substitution property of equality, both the angles JNL and MNK will have an equal measure.

Therefore, $m \angle JNL = 90^\circ$

6. ∠JNL is a right angle. Definition of right angle

8 0

3 years ago

Read 2 more answers

What is the inverse of f(x)=(x+6)2 for x≥–6 where function g is the inverse of function f? g(x)=x√−6, x≥0 g(x)=x−6−−−−√, x≥6 g(x

rosijanka [135]

Answer:

$g(x)=\sqrt{x}-6$ , x>=0

Step-by-step explanation:

$f(x)=(x+6)^2$

To find the inverse function , replace f(x) by y

$y=(x+6)^2$

Replace x with y and y with x

$x=(y+6)^2$

Solve the equation for y

take square root on both sides

$+\sqrt{x} =y+6$

Now subtract 6 from both sides

$+\sqrt{x}-6=y$

replace y with g(x)

$g(x)=\sqrt{x}-6$

7 0

3 years ago