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3 years ago

Solve |x| + 7 < 4 i still need help

Mathematics

1 answer:

maw [93]3 years ago

7 0

Hope this helps it’s this what you where looking for ?

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Ksju [112]

Answer:

40%

Step-by-step explanation:

6 0

3 years ago

A rectangular patio is 9 ft by 6 ft. When the length amd width are increased by the same amount, the area becomes 88 sq ft. Ging

SpyIntel [72]

( 6 + x)(9 + x) =88

54 + 15x + x^2 = 88

x^2 + 15x - 34 = 0

(x + 17)(x - 2) = 0
using zero product property:-
x + 17 = 0 or x - 2 = 0 giving:-

x = -17 , x = 2

x is the amount that the length and width are increased by.

x = -17 is negative and doesn't make sense in this context and can be ignored; so the amount of increase is 2 feet.

8 0

3 years ago

A man buys 30 birds, which are sparrows, turtle-doves, and doves, for 30 dollars. Three sparrows cost 1 dollar, two turtle-doves

kap26 [50]

Answer: The two equations that represent the conditions in the problems are $\dfrac{s}{3}+\dfrac{t}{2}+2d=30$

$s+t+d=30$

Step-by-step explanation:

Since we have given that

Cost of 3 sparrows = $1

Cost of 2 turtle doves = $1

Cost of 1 dove = $2

Number of birds = 30

total cost = $30

So, Cost of s sparrows would be

$\dfrac{1}{3}s$

Cost of t turtle doves would be

$\dfrac{1}{2}t$

Cost of d doves would be

$2t$

According to question, it becomes,

$\dfrac{s}{3}+\dfrac{t}{2}+2d=30$

and

$s+t+d=30$

Hence, the two equations that represent the conditions in the problems are $\dfrac{s}{3}+\dfrac{t}{2}+2d=30$

$s+t+d=30$

8 0

3 years ago

The graph of a line has a slope of 3 and passes through the point (–4, –5). What is the equation of the line in point-slope form

Contact [7]

Y + 5 = 3(x + 4)
Because in point-slope format, it is: y-(y-value) = m (x-(x-value)), where m=slope, and the point: (-4,-5) can be written as: (x-value,y-value),
So y - -5 = 3 (x - -4)

3 0

3 years ago

Solve by using elimination. Express your answer as an ordered pair.

IrinaK [193]

Answer:

(-2, 0)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

-x - 2y = 2

4x - 2y = -8

Step 2: Rewrite Systems

-x - 2y = 2

Multiply both sides by -1: x + 2y = -2

Step 3: Redefine Systems

x + 2y = -2

4x - 2y = -8

Step 4: Solve for x

Elimination

Combine equations: 5x = -10
Divide 5 on both sides: x = -2

Step 5: Solve for y

Define equation: 4x - 2y = -8
Substitute in x: 4(-2) - 2y = -8
Multiply: -8 - 2y = -8
Isolate y term: -2y = 0
Isolate y: y = 0

6 0

3 years ago

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