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3 years ago

7+3x-12x=3x+1 is it Infinitely many solutions, one solution, or no solutions with steps please

Mathematics

1 answer:

alisha [4.7K]3 years ago

3 0

Answer:

One solution

Step-by-step explanation:

7 + 3x - 12x = 3x + 1
7 - 9x = 3x + 1
3x + 9x = 7 - 1
12x = 6
x = 6/12
x = 1/2

It has one solution

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How many QUADRANT do we have in mathematics.

kotegsom [21]

Answer:

Step-by-step explanation:

There are four Quadrants in Mathematics. Counting from the right to left, to left, then right, we can tell which quadrant we are in.

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2 years ago

Read 2 more answers

PLEASE HELP!!!!! HAVING TROUBLE (see attached images)

qaws [65]

Answer:

The Proof for

Part C , Qs 9 and Qs 10 is below.

Step-by-step explanation:

PART C .

Given:

AD || BC ,

AE ≅ EC

To Prove:

ΔAED ≅ ΔCEB

Proof:

Statement Reason

1. AD || BC 1. Given

2. ∠A ≅ ∠C 2. Alternate Angles Theorem as AD || BC

3. ∠AED ≅ ∠CEB 3. Vertical Opposite Angle Theorem.

4. AE ≅ EC 4. Given

5. ΔAED ≅ ΔCEB 5. By A-S-A congruence test....Proved

Qs 9)

Given:

AB ≅ BC ,

∠ABD ≅ ∠CBD

To Prove:

∠A ≅ ∠C

Proof:

Statement Reason

1. AB ≅ BC 1. Given

2. ∠ABD ≅ ∠CBD 2. Given

3. BD ≅ BD 3. Reflexive Property

4. ΔABD ≅ ΔCBD 4. By S-A-S congruence test

5. ∠A ≅ ∠C 5. Corresponding parts of congruent Triangles Proved.

Qs 10)

Given:

∠MCI ≅ ∠AIC

MC ≅ AI

To Prove:

ΔMCI ≅ ΔAIC

Proof:

Statement Reason

1. ∠MCI ≅ ∠AIC 1. Given

2. MC ≅ AI 2. Given

3. CI ≅ CI 3. Reflexive Property

4. ΔMCI ≅ ΔAIC 4. By S-A-S congruence test

4 0

3 years ago

una ventana rectangular tiene l metros de ancho y h metros de altura, con un perímetro de 6 metros y un área de 2m² ¿cuál es la

seropon [69]

Answer:

The formula for calculating the width of the window is

$w=\frac{-(-3)(+/-)\sqrt{-3^{2}-4(1)(2)}} {2(1)}$

Step-by-step explanation:

The question in English is

A rectangular window is l meters wide and h meters high, with a perimeter of 6 meters and an area of 2m². What is the formula for calculating the width of the window?

we know that

The perimeter of the window is equal to

$P=2(l+w)$

we have

$P=6\ m$

$6=2(l+w)$

simplify

$3=(l+w)$

isolate the variable l

$l=3-w$ ----> equation A

The area of the window is equal to

$A=lw$

we have

$A=2\ m^2$

$2=lw$ ----> equation B

substitute equation A in equation B

$2=(3-w)w$

solve for w

$2=3w-w^2$

$w^2-3w+2=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$w^2-3w+2=0$

$a=1\\b=-3\\c=2$

substitute in the formula

$w=\frac{-(-3)(+/-)\sqrt{-3^{2}-4(1)(2)}} {2(1)}$ ---> formula for calculating the width of the window

$w=\frac{3(+/-)\sqrt{1}} {2}$

$w=\frac{3(+/-)1} {2}$

$w=\frac{3(+)1} {2}=2\ m$

$w=\frac{3(-)1} {2}=1\ m$

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3 years ago

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scoundrel [369]

Answer:

It is A: 11 to 1 :)

It's true!

(edited my answer btw, you have to simply also welp)

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3 years ago

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denis23 [38]

Answer:

Step-by-step explanation:

3/4 of 1000 is 750 and 1/5 of 750 is 150 so your answer is C

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2 years ago