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Lemur [1.5K]
3 years ago
13

Does anybody know this??​

Mathematics
1 answer:
Karo-lina-s [1.5K]3 years ago
7 0

Answer:

A.

Step-by-step explanation:

im in geometry my teacher lidirally teaching this rn brainliest pls pls pls

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Using f(x)=7x+35 what is the x-intercept
Gelneren [198K]

Answer:

(-5,0)

Step-by-step explanation:

8 0
4 years ago
There are two quarts of liquid in this container. What is the capacity of this container? A. 1 cup B. 1 pint C. 1 quart D. 1 gal
mina [271]

Answer:

D.1 galão

Step-by-step explanation:

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6 0
3 years ago
What is the exact solution for the equation
Nostrana [21]

Answer:

Option C is correct.

Exact solution of  2^{x+2} = 5^{2x} is, \frac{2\ln 2}{2\ln 5 - \ln 2}

Step-by-step explanation:

Given the equation: 2^{x+2} = 5^{2x}

Using logarithmic rules:

  • a^x=b^y ⇒ x \ln a =y \ln b
  • \ln x^a = a\ln x

Given: 2^{x+2} = 5^{2x}

Taking logarithmic both sides:

\ln 2^{x+2} = \ln 5^{2x}

By logarithmic rules;

(x+2) \ln 2 = (2x) \ln 5

Using distributive property i.e a\cdot (b+c) = a\cdot b + a\cdot c

x \ln 2 +2 \ln 2 = 2x \ln 5

Subtract x \ln 2 from both sides we get;

x \ln 2 +2 \ln 2 - x \ln 2= 2x \ln 5 - x \ln 2

Simplify:

2 \ln 2= 2x \ln 5 - x \ln 2

or

2 \ln 2= x (2\ln 5 - \ln 2)

Divide both sides by (2\ln 5 - \ln 2) we get;

\frac{2\ln 2}{2\ln 5 - \ln 2} = x

Therefore, the exact solution of the given equation is \frac{2\ln 2}{2\ln 5 - \ln 2}


7 0
3 years ago
Andrew bought 3 baseball cards for $240. After a few months, he got an offer from his friend Jack to buy the first card for doub
Dominik [7]
First we define variables:
 x = first card original value
 y = second card original value
 z = third card original value
 We write the system of equations:
 Andrew bought 3 baseball cards for $ 240:
 x + y + z = 240
 the first card (at its original value) along with the second card (at its original price) and got $ 320:
 2x + y = 320
 the first card (at its original value) card along with the third card (at its original price) would have only got him $ 280:
 2x + z = 280
 Solving the system we have:
 x = 120
 y = 80
 z = 40
 Answer:
 
The original prices for each of the 3 baseball cards is:
 
(120, 80, 40)
8 0
3 years ago
Can someone help me with this ?
Eduardwww [97]
100/200 that is the question
4 0
3 years ago
Read 2 more answers
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