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3 years ago

Use the rule y=-x+ 7 to fill in the blank. If (-1, y) is on the graph, then y=

Mathematics

2 answers:

umka2103 [35]3 years ago

4 0

Answer:

(-1,6)

Step-by-step explanation:

y=-x+ 7

Let x = -1

y = -1+7

y = 6

Jobisdone [24]3 years ago

3 0

Answer:

$\boxed{y=8}$

Step-by-step explanation:

$(-1, y)\\(x, y)\\x = -1\\y = ?$

Put x as -1.

$y = -(-1) + 7$

Solve for y.

$y = 1 + 7\\y=8$

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4^x-4^x-1=24,then find (2x)^x

DENIUS [597]

Answer: 5²⁻⁵

Step-by-step explanation:

$4^x-4^{x-1}=24\\\\\\3(4^{x-1})=24\\\\\\4^{x-1}=8\\\\\\2^{2(x-1)}=2^3\\\\\\2(x-1)=3\\\\\\x-1=\dfrac{3}{2}\\\\\\x=\dfrac{5}{2}\quad \rightarrow x=2.5$

$(2x)^x\quad =(2\cdot 2.5)^{2.5}\quad =\large\boxed{5^{2.5}}$

7 0

3 years ago

Please help if you can I will mark brainliest when it lets me

Igoryamba

Let c be the hypotenuse in miles.
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The path along Riverside Drive is shorter, about 11.4miles, compared to the path along Cypress and Control Avenues, 16 miles. The difference is about 4.6 miles. The Pythagorean theorem allowed me to calculate the distance along Riverside Drive because the three roads from a right triangle.

8 0

3 years ago

Circle A and circle B are congruent. CD is a cord of both circles. if AB = 24 inches in the radius is 13 inches how long is CD A

Nitella [24]

Option A

Length of CD is 10 inches

Solution:

The diagram is attached below

Given that, Circle A and circle B are congruent

CD is a cord of both circles

AB = 24 inches

Radius = 13 inches

To find: length of CD

Draw a straight line connecting A and C

AC represents the radius of circle. Also given that radius is 13 inches, So AC = 13 inches

Given in question that AB = 24 inches

Therefore from figure, AO = AB/2 = 24/2 = 12

AO = 12

Let "b" be the length of CO

Therefore, CD = CO + OD = b + b

AOC forms a triangle, so we can use pythogoras theorem

Pythagorean theorem, states that the square of the length of the hypotenuse is equal to the sum of squares of the lengths of other two sides of the right-angled triangle.

By above definition for triangle AOC

$AC^2 = AO^2 + OC^2$