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Levart [38]
3 years ago
14

PLEASE HELP ME ASAP

Mathematics
1 answer:
ryzh [129]3 years ago
8 0

b^2+12b+32

Answer: (b+4)(b+8)

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Find the slope of a line parallel to y=(2/5)x + (4/5)
Tcecarenko [31]

Answer:

So if a line was parallel it would have same slope. You can search up what slope-intercept form means. But if you have an equation like this:

y = mx+b

The slope will be m. Your question is written in the form. 2/5 = m.

The slope is 2/5

The y-intercept is 4/5

6 0
3 years ago
Read 2 more answers
In a random sample of 500 handwritten zip code digits, 464 were read correctly by an optical character recognition (OCR) system
In-s [12.5K]

Answer:

z= 2.38

P = 0.008656

Step-by-step explanation:

Here n= 500 and p~= 464/500= 0.928 and q`= 1- 0.928 = 0.072

We formulate our null and alternate hypothesis as

H0 =  0.9 ;       H0 > 0.9

The degree of confidence = 90%

z₀.₀₅ = 1.645 for  α= 0.05

We use the test statistic

z=  x- np/√npq

z= 466-500 *0.9/ √500 * 0.9(1-0.9)

z= 466- 450/ √45

z= 16/6.7082

z= 2.38

As the calculated value of z= 2.38  is greater than α =1.645 so we reject H0.

If H0 is true the P value is calculated as

P = 1- Ф( 2.38)

P = 1-0.991344=0.008656

7 0
3 years ago
Find the mean 9,1,8,3,2,1 graphically.
adelina 88 [10]
10+11+3
21+3
24
24/6
The mean is 4
4 0
3 years ago
HELPPPPPPPPP i will answer one of your question if you answer
Alika [10]
Its red because 25+7(1)=25+7=32, 25+7(2)=25+14=39, and so on
3 0
3 years ago
YS is the perpendicular bisector of XYZ and YS is a shared side of XYS and ZYS. which of the following must be congrent in order
german

Answer:

The triangles SYX and SYZ are congrient so by CPCTC XY\cong YZ, XS\cong ZS and \angle X\cong \angle Z.

Step-by-step explanation:

Given information: YS is the perpendicular bisector of XYZ.

In triangle YXS and triangle YSZ,

\angle SYX=\angle SYZ                 (YS is the perpendicular bisector of XYZ)

YS=YS                                            (Common side, Reflexive property)

\angle YSX=\angle YSZ=90^{\circ}   (YS is the perpendicular bisector of XYZ)

By ASA postulate,

\triangle SYX\cong \angle SYZ

The corresponding parts of congruent triangles are congruent. so,

XY\cong YZ

XS\cong ZS

\angle X\cong \angle Z

6 0
3 years ago
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